thin

• 指物体两个相对面之间距离小，不厚；也形容人身材瘦、不胖；还可表示稀疏、稀薄或细小。

Describes something that has a small distance between opposite sides or surfaces; not thick.

1. A1formal

   Having a small distance between opposite surfaces; not thick.

   薄

   • The ice on the lake was very thin.
   • She cut a thin slice of bread.
   • The walls are too thin to block out noise.

   同义词fineflimsyslenderslightslim

   反义词bulkyfatthick

2. Slim or leanA1formal

   Having little body fat; slender.

   瘦

   • He is tall and thin.
   • The model was very thin.
   • She looked thin after her illness.

   同义词lankyleanskinnyslenderslightslimsparesvelte

   反义词chubbyfatheavyobeseoverweightplump

3. Not dense or sparseB1formal

   Having few parts or items relative to the area; not dense.

   稀疏的

   • The crowd was thin at the beginning of the concert.
   • His hair is getting thin on top.
   • The air is thin at high altitudes.

   同义词meagerscantscantyslightsparsespread outthinned

   反义词densethick

4. Weak or poorB2informal

   Lacking substance, strength, or quality.

   薄弱的

   • The plot of the movie was thin and predictable.
   • His excuse was too thin to be believable.
   • The evidence is thin and doesn't support the claim.

   同义词feebleflimsyinsubstantialmeagerpoorshallowslighttenuousunconvincingweak

   反义词robustsolidstrongsturdysubstantialthick

• 动词，表示使某物的密度、厚度或浓度减小，或使某物变得不那么稠密或厚实；也可指变得稀疏或变薄。

A verb used to indicate the act of making something less dense, less thick, or more sparse, or to become less dense or thick.

1. Make less denseB1formal

   To make something less thick, dense, or concentrated.

   稀释

   • You need to thin the paint with water before applying it.
   • The gardener thinned the seedlings to give them more room to grow.
   • She thinned the sauce by adding a little broth.

   同义词attenuatecutdiluterarefywater downweaken

   反义词concentratecondensedensethicken

2. Become less denseB1formal

   To become less thick, dense, or crowded.

   变稀薄

   • His hair began to thin as he got older.
   • The crowd thinned out after the parade ended.
   • The fog started to thin as the sun rose.

   同义词attenuatedecreasediminishdispersedissipatedwindlelessenrarefytaperthin out

   反义词condensethicken

短语动词变体thin out