Meanings
plural sour tooths · alternative sour-tooth
- idiomaticsingularuncommonA liking for foods that are sour.
Fruits are sweet! I hate anything sweet! I have a sour tooth.
2015 November 16, Kaivallya Dasu, “Boulder Clearing”, in Enchantress of Elektra, Partridge Publishing India, →ISBN, unnumbered page2 more examples
Robin and Jay Brown weren't the kind of kids to be caught with their hands in the cookie jar — they each had a sour (sometimes a half-sour) tooth, and pilfered pickles instead of desserts.
1997 April 14, “Deep in a Pickle on the Upper West Side”, in New York, volume 30, number 13, page 26Use about an equal weight of sugar (or less, if you've got a sour tooth), top with your favorite crumble or sweet biscuit topping and bake
2014, Tricia Cornell, The Minnesota Farmers Market Cookbook: A Guide to Selecting and Preparing the Best Local Produce with Seasonal Recipes from Chefs and Farmers, Voyageur Press, →ISBN, page 59 - countableidiomaticrareSomeone with a liking for sour foods.
Some "sour-tooths" prefer a sweet, non-acid fruit to an acid non-sweet one, while others do not.
1944, Journal of the Royal New Zealand Institute of Horticulture
Origin
By analogy with sweet tooth.
Full word history & related roots →Cite this entry
sour tooth. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/sour%20tooth
“sour tooth.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/sour%20tooth. Accessed November 4, 2026.
WatkinsX Dictionary, s.v. “sour tooth,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/sour%20tooth.
Source: sour tooth on Wiktionary, CC BY-SA 4.0.