1540s, "displeasing to the eye," from un- (1) "not" + sight (n.) + -ly (1). Similar formation in Middle Dutch onsichtlijc "invisible; ugly," Middle High German unsihtlih "invisible." Related: Unsightliness.
Middle English sightlie is attested from mid-15c. but only in the sense "visible;" unsightly is attested in Middle English only as an adverb meaning "invisibly" (late 15c.). Sightly as "pleasing to the eye" is from 1560s. Middle English also had unsighty "difficult or displeasing to look at" (early 15c., from sighty "attractive," late 14c.), also unsightily in the same sense (c. 1400).
实用例句
1. My mother has had unsightly varicose veins for years.
我母亲多年来一直患有难看的静脉曲张。
来自柯林斯例句
2. The Polish market in Berlin was considered unsightly and shut down.
柏林市内的波兰市场因为被认为有碍观瞻而关闭了。
来自柯林斯例句
3. The marking on the wall was childish and unsightly.