Meanings
nounfun sponge (plural fun sponges)
plural fun sponges
- derogatoryendearingfigurativelyinformalmildlyusuallySomeone who or something that takes the fun out of life; a killjoy.
Synonyms: buzzkill, killjoy, spoilsport
Synonyms & antonyms
nounSomeone who or something that takes the fun out of life; a killjoy.
Similar
Origin
Suggesting that such a person, etc. would suck up the fun as a sponge sucks up water.
Full word history & related roots →Cite this entry
APA
fun sponge. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/fun%20sponge
MLA
“fun sponge.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/fun%20sponge. Accessed November 2, 2026.
Chicago
WatkinsX Dictionary, s.v. “fun sponge,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/fun%20sponge.
Source: fun sponge on Wiktionary, CC BY-SA 4.0.