putdown

/P UH1 T D AW0 N/
noun
  1. 1

    An insult or barb; a snide or demeaning remark.

    โ€œWhen he called you a know-it-all, he meant it as a put-down.โ€

Synonyms

Source: https://en.wiktionary.org/wiki/put-down, https://en.wiktionary.org/wiki/putdown