ter·gi·ver·sate
Pronunciation: tur-JI-ver-seyt
Part of speech: verb
Etymology: Latin tergiversātus (past participle of tergiversārī to turn one's back), equivalent to tergi- (combining form of tergum back) + versātus, past participle of versāre, frequentative of vertere to turn
Date: 1645–55
Meaning: to change repeatedly one's attitude or opinions with respect to a cause, subject, etc.; equivocate.
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Like many, I'm unfamiliar with the word "tergiversate," and thus I find it an interesting choice. With so many options, I imagine it would be difficult to come to a consensus on just one word. In fact, I wonder how many times the lexicographers tergiversated their final selection prior to announcing the official winner.
(via The Huffington Post)