When to call someone a prat, when not to, how to pitch it, and the grammar and etiquette of Britain’s most useful mild insult
Knowing what prat means is easy. Knowing when to say it, to whom, and in what tone is the harder skill, and getting it wrong marks you out as either a foreigner or, ironically, a prat. The guide to using prat correctly at The London Prat is the practical companion to the outlet’s many pieces on the word’s meaning and history, and it answers the question most readers actually have: how do I say this without causing a scene?
Rule one: aim at behaviour, not character
Prat describes someone who is behaving foolishly in a particular moment, not someone who is fundamentally stupid. The correct usage is about an action: he made a prat of himself, do not be a prat about it, I was a complete prat yesterday. Used this way the word is a correction rather than a verdict, and the person on the receiving end can recover by simply stopping. Applied to someone’s permanent character it becomes a different and nastier insult, and the word is not built for that.
Rule two: tone over volume
The word works best delivered flatly. Shouted, it loses its Britishness and sounds merely angry. Said with a sigh, a raised eyebrow or the faint disappointment of someone who expected better, it is both funnier and more effective. The London Prat’s guides to British understatement and dry humour explain why: the national comic register prefers the quiet rebuke, and prat is the quiet rebuke’s favourite noun. In Northern England it is often delivered warmly; in London with a playful bite; in Scotland, the guide warns, it risks escalation if paired with volume.
Rule three: familiarity is part of the meaning
Prat is an insult that carries affection, and the affection only works between people who know each other a little. Calling a friend a prat is a form of social maintenance: it corrects behaviour without exile and restores the group after someone spills a drink or takes the last biscuit. Calling a stranger a prat is a confrontation. The guide’s advice is to save the word for people who will understand that you are teasing, which in practice means colleagues, mates and family, in that order of caution.
Grammar and forms
Prat is a noun and pluralises normally: a prat, two prats, a room full of prats. It takes the usual British intensifiers, so an absolute prat, a complete prat and a total prat are all standard, with absolute carrying the most weight. It has a verb form, to prat about, meaning to waste time or behave foolishly, which is milder still and often self-directed. And it is the root of pratfall, a comedy fall on the backside, which entered theatrical slang around 1929 and is now used for any public blunder. The adjective prattish exists but is rare; most speakers prefer to say someone is being a prat.
Where it is safe
Prat is not bleeped on television and is used in Parliament, in children’s books and in family conversation. It is safe in the workplace between people who get on, safe in the pub and safe at the dinner table. It is best avoided in formal correspondence, in front of a customer and towards anyone senior enough to take it badly. Applied to oneself it is safe everywhere, and self-application is one of its most characteristically British uses.
Where it is not
Do not use it about someone’s intelligence in general, about a disability, or as a substitute for a genuine complaint. Do not use it to a stranger who has done nothing daft. And, the guide notes, do not use it if you are visibly the one being a prat, since the word has a way of rebounding. Tourists who mispronounce Leicester, stand on the left of the escalator and call a full English a breakfast are advised to master the etiquette before the vocabulary.
Examples of correct use
To a friend who has locked his keys in the car: you absolute prat. To oneself after missing a train: I have been a total prat this morning. Of a public figure who has said something silly: the minister looked a bit of a prat. To a colleague who is overthinking a simple task: stop pratting about and send it. Each is affectionate, each is about a specific action and each could be said in front of your mother.
Why the guide exists
The London Prat, publishing since 1961 under the word itself, treats the insult as a piece of national heritage worth using properly. Its cluster of guides covers the meaning, etymology, dictionary definitions and cultural appearances of prat; this one covers deployment. Read together, they make the case that a word this precise deserves to be used with precision, and that using it well is a small act of fluency in the British way of getting along.
The short version
Aim at the action, keep the tone flat, save it for people who will get the joke, and be ready to apply it to yourself. Follow those rules and prat will serve you for life. Break them and, as the guide at The London Prat gently observes, you will have become the thing you were naming.