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act

/ækt/

Something done; a deed or performance

From Latin ag (to drive).

noun
verb
ag
Latin
AI-inferred
agere
to drive, do, set in motion
Latin
Verified
actus / actum
a doing; a thing done; a legal or theatrical act

from Latin actus "a doing; a driving, impulse, a setting in motion; a part in a play," and actum "a thing done"...

Middle English
Verified
act
a deed, a performance, or a statute

from Latin actus "a doing; a driving, impulse, a setting in motion; a part in a play," and actum "a thing done"...

Early Modern English
AI-inferred
in the act
in the process of doing something
Modern English
AI-inferred
act of God; get into the act; get one's act together
legal, theatrical, and idiomatic extensions
Modern English
act

A Roman might use agere for all sorts of motion: driving cattle, pushing a case in court, even performing onstage. That slippery little verb spawned actus, which could mean a deed, a legal action, or the turning of a play into visible motion. English borrowed the noun in the late 1300s, and suddenly a single word could cover both a parliament's statute and a hammy stage performance. Its cousins are everywhere: agent is the one who acts, action is the doing itself, and exact is what happens when something is driven all the way out, right to the finish. By the time people were saying get your act together in the 1970s, the old Latin idea was still there: stop drifting, start moving, make the deed match the plan.

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