humdinger means something that is particularly outstanding, unusual, or exceptional. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
humdinger is pronounced /hʌmˈdɪŋ.ə(ɹ)/.
Etymology
US origin, perhaps a blend of hummer (“something that moves fast”) + dinger (“something outstanding”). First attested in a newspaper article in the Daily Enterprise of June 4, 1883, at Livingston, Montana.
noun
- Something that is particularly outstanding, unusual, or exceptional.“Most of the questions were pretty easy, but that last one was a humdinger.”