thin is on the Basic English 850 List.
thick - thin - thing

Pronunciation change

Adjective change

Positive
thin

Comparative
thinner

Superlative
thinnest

 
These flowers are thin.
  1. If something is thin, there's a short distance from one side to the other.
    I can hear the people in the other room because the wall is thin.
    The man was very tall and thin as a stick.
  2. If something is thin it doesn't have a lot of stuff in it.
    The soup is too thin. It needs more flavour.
    His hair is quite thin on top.

Synonyms change

Antonyms change

Verb change

Plain form
thin

Third-person singular
thins

Past tense
thinned

Past participle
thinned

Present participle
thinning

  1. (transitive & intransitive) If something thins, there is less of it.
    After the show, the crowd thinned out quickly and only a few people stayed.
    My hair started thinning when I was 25.

Related words change