firm up

/F ER1 M AH1 P/
verb
  1. 1

    (transitive, idiomatic) To make (tentative plans) more definite.

  2. 2

    (intransitive, idiomatic, of tentative plans) To become more definite.

  3. 3

    (transitive) To make (muscles) more toned through physical exercise.

  4. 4

    (intransitive, of muscles) To become more toned through physical exercise.

  5. 5

    (intransitive) To become firmer in consistency.