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Glite Dictionary
that does it

that does it

9 8.0
You say you will not accept something any more
  • idiom
  • Informal
translation icon : eso es suficiente
  • When he ignored our warnings for the last time, we all agreed, 'That does it; we need to take action now.'
  • Okay, that does it
  • Well, that does it
  • Oh, that does it

Examples

Synonyms

that's that
vsthat does it
  • Informal
37 5.1

A final decision that cannot be changed or discussed

says a limit has been reached and nothing more is tolerated
that's all she wrote
vsthat does it
  • Informal
1 9.2

The end when nothing more can be said or done

focuses on a reached limit and refusal to accept more rather than mere ending

Antonyms

patience
511 1.3

To stay calm and not get annoyed when things take time

tolerance
160 3.7

Willingness to accept beliefs or lifestyles different from your own

Surface Forms

that does it main

Morphology

that + do + it

The parts ('that' pointing to a prior action, 'does' = causes, 'it' as a pronoun) give a clue that something just caused a decisive result, but the pragmatic force ‘enough is enough’ (final tolerance reached, threat of consequences) is not fully derivable from the literal meanings. Understanding the exact communicative effect requires familiarity with the idiomatic usage and discourse context, so a B1 learner who only knows the constituents may not reliably infer the full sense.

Etymology

That does it may come from the image of a pile of small problems where one last thing finally does it and the pile falls. So that does it means 'enough is enough' and you will not accept any more.