c. 1400, "resembling skin," from skin (n.) + -y (2). Meaning "lean, emaciated" is recorded from c. 1600. Of clothes, "tight-fitting" by 1970. In the noun sense of "the truth" it is World War II military slang, perhaps from the notion of the "naked" truth. Related: skinniness.
实用例句
1. He set his skinny legs apart and threw back his shoulders.
他叉开两条细腿，猛地挺起胸膛。
来自柯林斯例句
2. You're too skinny — we'll have to fatten you up.
