Pronounced: TUSS-ee-MUSS-ee, noun
Notes: I know some of the synonyms of this word, but not this word
The word wisenheimer means “a wiseacre or smart aleck”
Our word came into English in the 1910s
Background / Comments
As I mentioned, I think I heard this word a long time ago, but I haven’t heard it in recent years. A variant spelling is wiseheimer. The word is an Americanism, from wise and (en)heimer, which comes from surnames that end thusly.