- 1[transitive] firm something to make something become stronger or harder Firm the soil around the plant. This product claims to firm your body in six weeks.
- 2[intransitive] firm (to/at…) (finance) (of shares, prices, etc.) to become steady or rise steadily The company's shares firmed 3p to 696p. Word Originverb Middle English: from Old French ferme, from Latin firmus. Phrasal Verbsfirm upfirm somethingup
BrE BrE//fɜːm//; NAmE NAmE//fɜːrm//Verb Forms present simple I / you / we / they firm
BrE BrE//fɜːm//; NAmE NAmE//fɜːrm//he / she / it firms
BrE BrE//fɜːmz//; NAmE NAmE//fɜːrmz//past simple firmed
BrE BrE//fɜːmd//; NAmE NAmE//fɜːrmd//past participle firmed
BrE BrE//fɜːmd//; NAmE NAmE//fɜːrmd//-ing form firming
BrE BrE//ˈfɜːmɪŋ//; NAmE NAmE//ˈfɜːrmɪŋ//