1805, "having the form or character of a sketch," from sketch (n.) + -y (2). Colloquial sense of "unsubstantial, imperfect, flimsy" is from 1878, perhaps via the notion of "unfinished." Related: Sketchily; sketchiness.
例文
1. He gave us a very sketchy account of his visit.
彼は私たちに見学の様子を非常に大雑把に話してくれた。
2.We managed to piece together the truth from several sketchy accounts.
いくつかの大まかな説から何とか真実を明らかにした。
3.The material he supplied is too sketchy .
彼が提供した材料は簡略すぎる.
4.Only sketchy information exists on the stock of natural resources such as fish.
魚などの自然資源の総備蓄量についてはあまり知られていない。
5.He only managed to give the police a few sketchy details of the robbery.