firm - definition and synonyms

verb 

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/fɜː(r)m/
present tense
I/you/we/theyfirm
he/she/itfirms
present participlefirming
past tensefirmed
past participlefirmed
  1. 1
    [transitive] to make something more solid and strong

    Gently firm the earth around the new plants.

    1. a.
      [intransitive] literary to become or appear stronger

      Anna’s jaw firmed as she thought of what she must do.

phrasal verbs