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firm - definition and synonyms

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adjective     firm pronunciation in British English
Word Forms
  1. 1
    solid but not hard

    The ground underfoot was fairly firm and not too muddy.

    I sleep better on a firm mattress.

  2. 2
    steady and fixed in place

    Make sure the ladder is firm before you start to climb.

    1. a.
  3. 3
    definite and not likely to change

    Have you set a firm date for the meeting?

    a firm commitment:

    We want a firm commitment that resources will be provided.

    a firm belief/conviction:

    It is my firm belief that we must encourage debate.

    a firm believer:

    Mark’s a firm believer in discipline for children.

    a firm favourite:

    The Rams are firm favourites to take the title this year.

  4. 4
    showing that you are in control of a situation and will not be easily forced to do something

    Her staff regard her as firm but fair.

    What the party needs now is firm leadership.

    be firm with someone:

    You sometimes have to be firm with young children.

    take firm action:

    The government must take firm action to stop the fighting.

  5. 5
    physically or mentally strong

    She took a firm hold of the stick and pulled hard.

    Her handshake was firm and her smile warm.

    Bruce put a firm hand on my arm.

derived words



I firmly believe that we must act at once.


noun [uncountable]
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a form of location that involves the underwater detonation of a bomb which causes sound waves that are picked up by ships

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