This glossary defines the terms that appear most often in operator terms and conditions, account notices, and withdrawal messages. Each entry gives a plain definition first, then explains what the term means in practice for a reader assessing an operator. Terms are grouped by the situation in which they are most likely to be encountered, and every entry carries its own anchor so other pages can link straight to a single definition.
What do licensing and regulation terms mean?
Licensing terms describe who authorised an operator to accept bets, and under whose rules that authorisation sits. These terms are the most frequently misused in operator marketing, because a licence is often presented as a guarantee of safety rather than as a record of registration in one specific jurisdiction.
Gambling licence
A gambling licence is a permission issued by a named regulator allowing an operator to offer defined gambling products, in a defined territory, under defined conditions. A licence is jurisdiction specific. It carries no authority outside the territory that issued it, and it does not make an operator lawful in a country that issues no online licence of its own. Malaysia is one such country, a point examined in detail on the page covering what Malaysian law says about online operators.
Master licence and sub-licence
A master licence is a licence held by an intermediary that was permitted to issue subsidiary permissions, known as sub-licences, to other operators. Curaçao operated this structure for years, which meant an operator could display a licence number without the regulator having assessed that operator directly. Curaçao replaced the structure through its 2024 reform, so licence claims dated before December 2024 describe a system that no longer exists and should be treated as stale until confirmed against the current register.
White label operator
A white label operator is a brand that runs on another company’s platform and, in many cases, under that company’s licence. The consequence for a reader is that the brand on the website may not be the legal entity holding the licence, processing deposits, or answering a dispute. Identifying which entity actually stands behind a brand often requires reading the terms and conditions rather than the homepage.
What do account and verification terms mean?
Account terms describe the checks an operator applies before releasing funds or granting access. These checks are where most account disputes begin, because they are usually triggered at withdrawal rather than at registration.
Account verification, or KYC
KYC stands for Know Your Customer, the identity verification process an operator applies to confirm that an account holder is who they claim to be. Typical requests include a government identity document, a recent proof of address, and a photograph of the payment instrument used. Verification is commonly requested at the first significant withdrawal rather than at sign up, which is why a withdrawal can stall on an account that has functioned normally for months.
Source of funds check
A source of funds check is a request for evidence showing where an account holder’s deposited money came from. Payslips, bank statements, and tax documents are the usual forms. A source of funds check is distinct from identity verification: identity verification asks who the account holder is, while a source of funds check asks how the money reached the account. Larger withdrawals and rapid increases in deposit volume are the most common triggers.
Two-factor authentication
Two-factor authentication, abbreviated 2FA, requires a second credential in addition to a password, usually a code from an app or a message. Where an operator offers it, 2FA is the single most effective protection against an account being accessed with a password obtained through a cloned login page.
What do payment and withdrawal terms mean?
Payment terms describe the conditions attached to moving money out of an account. Specific limits, fees, and processing durations vary by operator and change without notice, so the definitions below describe categories rather than figures.
Pending withdrawal
A pending withdrawal is a withdrawal request that has been submitted but not yet paid out. Pending status covers several distinct stages: internal review by the operator, outstanding account verification, unmet withdrawal conditions, and processing by the payment provider. Each stage has a different cause and a different resolution, so the label alone does not indicate what is holding the payment.
Wagering requirement, or rollover
A wagering requirement is a condition stating that a bonus, and sometimes the deposit attached to it, must be staked a set number of times before any related balance can be withdrawn. A requirement described as thirty times a bonus of a given amount means total stakes must reach thirty times that amount. Wagering requirements are the most common reason a balance that appears withdrawable is refused, and terms differ on whether the deposit itself is included in the calculation.
Reverse withdrawal
A reverse withdrawal is a feature that returns a pending withdrawal to the playable balance, either at the account holder’s request or automatically after a set period. The practical effect is that funds already requested can be staked again before they are ever paid out. Whether reversal is automatic and how long the window lasts are set in the operator’s terms.
What do odds and game mechanics terms mean?
Game mechanics terms describe the built in mathematical margin that determines long term outcomes. These terms are frequently presented as indicators of generosity, when they describe the structural advantage held by the operator.
House edge
House edge is the percentage of each stake an operator retains on average over a large number of plays. A house edge of two per cent means that, across many rounds, the operator retains two units for every hundred staked. House edge describes a long run average, not the outcome of any individual session, and it does not diminish with time or with a change of strategy.
Overround, also called the vigorish
Overround is the equivalent of house edge in sports betting, expressed as the amount by which the implied probabilities of all outcomes in a market exceed one hundred per cent. A market whose implied probabilities total one hundred and six per cent carries a six per cent overround. The excess is the operator’s margin, and it is priced into the odds before any bet is placed.
Return to player, or RTP
Return to player is the percentage of total stakes a game is designed to return to players over its full theoretical cycle, expressed as the inverse of house edge. A game with an RTP of ninety six per cent carries a four per cent house edge. RTP is a theoretical figure measured across millions of rounds, so it predicts nothing about a single session, and a higher RTP does not mean a player will finish ahead.
What do site access and authenticity terms mean?
Access terms describe why an operator’s website may be unreachable and how impersonating sites exploit that gap. This category matters in Southeast Asia specifically, because domain blocking is routine and creates a predictable opening for fraudulent copies.
Mirror site, or alternative link
A mirror site is a second domain serving the same platform as a primary domain, used to restore access when the primary domain is blocked. The term itself carries no assurance of authenticity: a genuine mirror and a fraudulent copy are indistinguishable by appearance, and both are commonly promoted using identical language. A mirror domain is only verifiable through a channel the operator controls and that a third party cannot forge.
Domain impersonation
Domain impersonation is the use of a domain resembling a legitimate operator’s domain in order to capture login credentials or deposits. Common techniques include altered spellings, added words, substituted characters, and different domain extensions. Because impersonating sites copy the original layout exactly, visual inspection is not a reliable test, and the domain string itself is the only element that differs.
Geo-blocking
Geo-blocking is the restriction of access to a website based on the visitor’s apparent location, applied either by the operator or by an internet service provider acting on a regulatory instruction. Geo-blocking produces the same symptom as an outage or a discontinued domain, which is why an unreachable site is not by itself evidence that an operator has ceased to function.
What do responsible gambling control terms mean?
Control terms describe tools that limit gambling activity at the account level or the device level. These tools are documented here because they appear in operator terms without explanation, and the differences between them determine how easily each can be undone.
Self-exclusion
Self-exclusion is a request to close or suspend access to an account for a fixed period during which the operator agrees not to accept the account holder’s business. Self-exclusion applied at the operator level covers only that operator, so it does not prevent registration elsewhere. Device level blocking software restricts access across all applications and is considerably harder to reverse, a distinction covered on the responsible gambling page.
Deposit limit and loss limit
A deposit limit caps the amount that can be paid into an account over a set period, while a loss limit caps net losses over that period. The distinction matters because a deposit limit does not restrict how quickly a balance is staked. Increases to either limit typically take effect only after a delay, whereas decreases usually take effect immediately.
Cooling-off period
A cooling-off period is a short suspension of account activity, commonly ranging from a day to several weeks, after which access resumes automatically. A cooling-off period differs from self-exclusion in that it is shorter, ends without any further action, and is generally offered as an account setting rather than a formal request.
Frequently Asked Questions
Does holding a gambling licence mean an operator is safe?
No. A licence records that a named regulator authorised an operator to offer defined products in one territory under stated conditions. It says nothing about how disputes are handled, how quickly withdrawals are paid, or whether the licence remains current. A licence is a starting point for verification, not a substitute for it.
Is a Curaçao licence equivalent to a Malaysian one?
No, because Malaysia issues no online gambling licence at all. No operator, domestic or offshore, holds Malaysian authorisation to offer online betting. A Curaçao licence authorises an operator under Curaçao’s rules only and confers no status under Malaysian law.
Does a higher RTP mean a player will win more?
No. RTP is a theoretical figure calculated across millions of rounds, and every RTP below one hundred per cent describes a net loss over the long run. A game with a higher RTP has a smaller built in margin, but the expected direction of the outcome across sustained play is unchanged.
What is the difference between KYC and a source of funds check?
KYC confirms identity, asking who the account holder is through documents such as an identity card and a proof of address. A source of funds check asks where the deposited money originated, requiring evidence such as payslips or bank statements. A source of funds check is usually triggered by larger withdrawals or unusual deposit patterns.
Is a mirror site an official site?
Not necessarily. The word mirror describes a function, not an origin. Genuine mirror domains and fraudulent copies present identically and are promoted with the same wording, so a mirror domain is only trustworthy when confirmed through a channel the operator controls and a third party cannot forge.
Can a wagering requirement block withdrawal of a player’s own deposit?
Yes, in some cases. Where terms state that the deposit as well as the bonus is subject to the requirement, the deposited amount is locked until total stakes reach the stated multiple. Whether the deposit is included varies by operator and is set out in the bonus terms rather than the general terms.
Is self-exclusion reversible?
Not during the stated period, in most cases. Self-exclusion is designed to be difficult to undo, and reputable operators decline early reinstatement requests. Exclusion applied at the operator level covers only that operator, so it does not prevent an account being opened with a different one.
Key Takeaway
The definitions on this page describe categories and mechanisms, all of which are stable and independently checkable. No operator specific figure appears here: limits, fees, wagering multiples, and processing durations differ by operator and change without notice, and any specific number should be read directly from the operator’s own terms and conditions rather than from a third party summary. Two entries carry a dated qualification. The Curaçao master licence structure described under master licence and sub-licence was replaced by the 2024 reform, so any licence claim predating December 2024 requires confirmation against the current register. Entries will be added to this glossary as further clusters are published, and the approach behind them is set out in the Editorial Policy.