1thin 
/ˈθɪn/ adjective
thin·ner; thin·nest /ˈθɪn/ adjective [also more thin; most thin] 1 : having a small distance between the top and bottom or front and back surfaces : not thick
▪ thin paper/walls ▪ a thin band/line/stripe ▪ a thin coating/layer of dust ▪ pizza with a thin crust ▪ a thin slice of ham 2 : not having a lot of extra flesh on the body : not fat
▪ a thin child ▪ She is very/too thin. ▪ thin legs synonyms 2lean 3 a : not growing closely together
▪ a thin stand of trees : not growing in a large amount ▪ thin hair ▪ His hair is a little thin on top. = He's a little thin on top. [=he does not have a lot of hair on the top of his head]
b : having less than the usual, original, or needed number or amount
▪ Attendance at the carnival was a bit thin. [=low] ▪ My patience was wearing/running thin. [=I was becoming less patient] 4 of a liquid : flowing very easily : containing a lot of water
▪ thin broth/gravy/soup 5 : having less oxygen than normal
▪ thin air ▪ a thin atmosphere 6 : easy to see through
▪ The fog was relatively thin. ▪ a thin mist 7 : not large or impressive
▪ a thin [=very small] margin of victory ▪ She has a thin [=narrow] lead in the polls. 8 : not very good, useful, etc. : weak
▪ thin arguments/explanations ▪ That excuse is pretty thin. ▪ The story's plot is pretty thin. ▪ His argument quickly wore thin. ▪ a thin smile [=a weak smile that does not seem sincere] 9 of a voice : weak and high
▪ a high, thin voice
▪ thin paper/walls ▪ a thin band/line/stripe ▪ a thin coating/layer of dust ▪ pizza with a thin crust ▪ a thin slice of ham
▪ a thin child ▪ She is very/too thin. ▪ thin legs synonyms 2lean
▪ a thin stand of trees : not growing in a large amount ▪ thin hair ▪ His hair is a little thin on top. = He's a little thin on top. [=he does not have a lot of hair on the top of his head]
b : having less than the usual, original, or needed number or amount
▪ Attendance at the carnival was a bit thin. [=low] ▪ My patience was wearing/running thin. [=I was becoming less patient]
▪ thin broth/gravy/soup
▪ thin air ▪ a thin atmosphere
▪ The fog was relatively thin. ▪ a thin mist
▪ a thin [=very small] margin of victory ▪ She has a thin [=narrow] lead in the polls.
▪ thin arguments/explanations ▪ That excuse is pretty thin. ▪ The story's plot is pretty thin. ▪ His argument quickly wore thin. ▪ a thin smile [=a weak smile that does not seem sincere]
▪ a high, thin voice
(a) thin skin — see 1skin
disappear/vanish into thin air
: to disappear completely in a way that is mysterious
▪ The papers seem to have vanished into thin air.
▪ The papers seem to have vanished into thin air.
have a thin time (of it)
Brit : to be in a difficult situation especially because you do not have enough money
▪ He was having a thin time of it until his novel started selling.
▪ He was having a thin time of it until his novel started selling.
on thin ice — see 1ice
out of thin air
— used to say that someone or something appears in a sudden and unexpected way ▪ He appeared out of thin air. [=out of nowhere]
the thin end of the wedge
Brit : the beginning of something that will become more serious, unpleasant, etc.
▪ The bank's decision to raise rates could be the thin end of the wedge. [=many other banks may also decide to raise rates]
▪ The bank's decision to raise rates could be the thin end of the wedge. [=many other banks may also decide to raise rates]
thin on the ground
Brit : existing or occurring in very small amounts
▪ Useful suggestions have been thin on the ground lately. [=there have been very few useful suggestions lately]
▪ Useful suggestions have been thin on the ground lately. [=there have been very few useful suggestions lately]
through thick and thin — see 3thick
— thin·ness /ˈθɪnnəs/ noun [noncount]
/ˈθɪnnəs/ noun [noncount]
