firm up

Meaning

  1. (idiomatic, transitive) To make (tentative plans) more definite.
  2. (idiomatic, intransitive) To become more definite.
  3. (transitive) To make (muscles) more toned through physical exercise.
  4. (intransitive) To become more toned through physical exercise.
  5. (intransitive) To become firmer in consistency.

Notes

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