Pronounced: TUSS-ee-MUSS-ee, noun
Notes: I know some of the synonyms of this word, but not this word
Yesterday’s word
The word wisenheimer means “a wiseacre or smart aleck”
First usage
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.
Richard's Vocabulary Word-of-the-Day 