part of your body that is weak is not as strong or healthy as it should be. weakly adverb. Antonyms for thin. Thin synonyms, thin antonyms - FreeThesaurus.com He took it up and tried to read, but the print swam into thin, black smudges. His voice was thin, but it kept that line of hands high above their heads. Weak synonyms. 164 synonyms for thin: narrow, fine, attenuate, attenuated, threadlike, slim, spare, lean, slight, slender, skinny, light, meagre, skeletal, bony, lanky.... What are synonyms for thin? Thin synonyms. Top thin synonyms (related to weak) are poor, slight and delicate. Top weak synonyms (related to thin) are delicate, frail and feeble.
"Rose campion," she said, parting the stems with her long, thin fingers. a wasted arm, leg, or other part of someone’s body looks extremely thin and weak, especially because they are ill. weak adjective. Top synonyms for weak (other words for weak) are feeble, poor and frail.

Synonyms for thin in Free Thesaurus.

She was thin, thinner than ever, and stiff as if she had withered.