smell up

verb

To fill up with an unpleasant odour.

Meanings

verbsmell up (third-person singular simple present smells up, present participle smelling up, simple past and past participle smelled up or smelt up)

present singular third person smells up · participle present smelling up · participle past smelled up · past smelled up · participle past smelt up · past smelt up

  1. informaltransitiveTo fill up with an unpleasant odour.
  2. informalintransitiveTo have an unpleasant odour.

Synonyms & antonyms

verbcause to smell bad; fill with a bad smell

Broader
odorizeodourisescent

Synonym sets from Open English WordNet, CC BY 4.0.

Cite this entry
APA

smell up. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/smell%20up

MLA

“smell up.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/smell%20up. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “smell up,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/smell%20up.

Source: smell up on Wiktionary, CC BY-SA 4.0.