# Discipline > Discipline is an agreed structure of rules and consequences between consenting adults. The rule is the defining part, not the punishment that follows it. - Canonical URL: https://consensualspanking.co.uk/glossary/discipline/ - Section: A–Z - Updated: November 2026 (2026-11-01) - Audience: consenting adults over 18 only. Everything on this site concerns consenting adults over 18. One of the two Ds in BDSM, and the one that draws people who are not particularly interested in pain. What they want is the structure: something expected of them, and someone who notices whether it happened. --- ## In short - Discipline means agreed rules with agreed consequences between adults over 18. - The rule matters more than the punishment. Vague rules produce arguments, not accountability. - It is distinct from sadomasochism, which is about sensation rather than compliance. - Rules that cannot be renegotiated, or that isolate someone, are coercive control rather than discipline. Everything on this page concerns consenting adults over 18. ## What it means Discipline is the arrangement where two people agree that certain things are expected, that someone will check, and that not meeting them leads to a consequence decided in advance. The consequence is often a spanking. It can equally be lines, a withdrawn privilege or a conversation nobody enjoys. What separates discipline from the rest of this subject is that it runs on compliance rather than sensation. A masochist wants the stroke. A person drawn to discipline wants the fact that the stroke was earned, or avoided, or waited for. That difference explains why the same implement can be thrilling on Friday and genuinely unwelcome on Sunday, and why the two should be kept clearly apart. The full treatment of how these arrangements are built and maintained is in the [discipline section](https://consensualspanking.co.uk/discipline/). This entry is the definition. ## In practice The rules I have seen work are boring and checkable. Gym twice a week. The tax return submitted by the date on the calendar. You can tell without argument whether they happened, which is the entire design brief. The rules that fail are atmospheric. Be more respectful. Try harder. Have a better attitude. Nobody can meet those, because nobody can tell when they have, and what actually happens is that the person with the authority ends up deciding retrospectively whether they feel like being annoyed. That is mood wearing the vocabulary of discipline. My own rule about delivery is that nothing happens while either of us is irritated. If something needs dealing with, it gets named at the time and handled later, deliberately, when the temperature has dropped. I have broken that rule once, years ago, and the evening was unpleasant in a way that had nothing to do with how hard anything landed. - Few rules. Two or three that matter, not fourteen that do not. - Written down, because memory edits itself in favour of whoever is annoyed. - A consequence attached before the rule is ever broken. - A review date, so the whole thing can be changed without a crisis. - An exit clause in plain words, because a structure you cannot leave is not one you chose. ## The usual mistake The commonest error is thinking discipline is the punishment part. People set up an arrangement, invent rules to justify the spanking they wanted anyway, and then find the whole thing feels hollow within a month. The spanking was never the load-bearing bit. Being noticed was. The second error is treating a disciplinary frame as a licence to be critical. An agreement to hold someone to two rules is not an agreement to comment on their weight, their job or their family. Scope creep here is the early form of something much worse. > **Where it stops being discipline.** Rules that isolate someone from friends and family, control money, or cannot be renegotiated are the pattern described in section 76 of the Serious Crime Act 2015, which covers controlling or coercive behaviour in England and Wales and needs no violence to be made out. Agreement is not a defence. National Domestic Abuse Helpline **0808 2000 247**, free, 24 hours. ## Where it comes from Discipline entered the vocabulary as half of the B/D pairing in BDSM, alongside bondage. Of the two, it is the one that needs no equipment at all. ## Read next - [Rules and agreements](https://consensualspanking.co.uk/discipline/rules-and-agreements/) - [Maintenance and punishment](https://consensualspanking.co.uk/discipline/maintenance-vs-punishment/) - [Discipline dynamic](https://consensualspanking.co.uk/glossary/discipline-dynamic/) - [Funishment](https://consensualspanking.co.uk/glossary/funishment/) > **Not legal advice.** Where this page mentions the law, it is general information written from an England and Wales position unless it says otherwise, and it is not legal advice. Scotland and Northern Ireland have their own law. If your own legal position matters, speak to a solicitor. ## Common questions ### What does discipline mean in BDSM? Discipline is the use of rules and consequences between consenting adults: an agreement that certain behaviour is expected, and that failing to meet it leads to something previously agreed, often a spanking. It is the D that pairs with bondage in BDSM. The defining feature is the rule rather than the punishment, which is why discipline can exist in a relationship where nobody is ever struck. ### Is discipline the same as punishment? No. Discipline is the whole structure of expectations, checking and consequences. Punishment is one thing that can happen inside it when a rule is broken. A discipline arrangement that consists only of punishment usually collapses within a couple of months, because the rules were never specific enough to be met in the first place.