/əˈrɛst/
[verb] To stop someone and hold them by legal authority, or more generally to stop something from moving or continuing. It can also mean to catch someone's attention completely.
Before police existed, 'arrest' simply meant to stop anything at all — a wheel, a thought, even time itself.
The word 'arrest' travels to us from the Old French verb 'arester', which meant simply 'to stop' or 'to stay'. That Old French word was built from two Latin parts: the prefix 'ad-' (meaning 'to' or 'towards') and the verb 'restare' (meaning 'to remain' or 'to stay behind'). The Latin 'restare' itself came from 're-' (meaning 'back') combined with 'stare' (meaning 'to stand'). So the deepest root of 'arrest' is the image of something being made to stand still — Latin stare → Latin restare → Old French arester → Middle English aresten → English arrest.
The word entered English around the late 14th century, brought over in the wake of the Norman Conquest of 1066, which flooded the English language with Old French vocabulary. In its earliest English uses, 'arrest' carried its broad original meaning — simply to stop or check something. A physician might arrest the spread of disease; a carpenter might arrest the movement of a falling beam. The legal sense, of physically detaining a person under authority, developed quickly and powerfully, and it is this meaning that eventually dominated all others.
What is striking about this word's early life is how general and even poetic it was. Writers in the 14th and 15th centuries used 'arrest' freely in non-legal contexts. You could arrest a river's flow, arrest the progress of a storm, or arrest the decay of a fruit. The idea was always the same: something in motion was brought to a halt. It was only as legal institutions became more formalised — and as the arresting of criminals became a visible, everyday act of civic life — that the legal meaning began to crowd out the others.
Yet the older, broader meaning never entirely disappeared. Even today, we speak of something 'arresting' our attention, meaning it stops us in our tracks and holds us fast. A painting can be 'arresting', a piece of music can be 'arresting', a face can be 'arresting'. In these uses, the word remembers its ancient self — not a policeman with handcuffs, but the simple, almost magical act of making something cease to move. The legal and the aesthetic senses of the word are, in this way, deeply connected: both describe a moment of being stopped against one's will, or at least without prior warning.
The shared root 'stare' — Latin for 'to stand' — is one of the most productive roots in the English language, hiding inside dozens of familiar words. Latin stare gave rise to Old French 'ester', from which English borrowed 'state', 'station', 'statue', and 'status'. It also feeds into 'stable', 'stance', 'instant', and even 'understand', which originally meant to stand among or stand close to something. 'Arrest' sits comfortably in this large family, always carrying at its heart the ancient image of standing still, of motion brought to a pause.