Knockout
Knockout adjective - Very pleasing to look at.
Usage example: a knockout sports car that's the talk of the neighborhood
Unattractive is an antonym for knockout.
Unattractive
Unattractive adjective - Unpleasant to look at.
Usage example: an unattractive, awkward baby bird
Knockout is an antonym for unattractive.
Nearby Word: unattractively
Both words in one sentence
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Dolph thinks this of Electra, as while she is not unattractive, she can in no way compete with the knockout Nada.
Source: Abhorrent Admirer -
A girl with Raven Hair, Ivory Skin who's an absolute knockout to anyone with eyes might still feel she's unattractive because she's told the "ideal" is blue-eyed blonde.
Source: I Am Not Pretty
Cite this Source
Unattractive and Knockout. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/knockout/unattractive
Knockout & Unattractive. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/knockout/unattractive>.
Unattractive or Knockout. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/knockout/unattractive.
Google Ngram Viewer shows how "knockout" and "unattractive" have occurred on timeline