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This tag is for questions seeking or discussing a term (or terms) belonging or peculiar to a science, art, or specialized subject (e.g. linguistics, mathematics, physics, biology, finance, theatre, music, philosophy, astronomy, medical, nautical etc.). Consider adding [single-word-requests] and [phrase-requests] tags also if relevant.

3 votes

What is a word or phrase for someone who professes to know something but actually doesn't?

How about know-it-all? It is a negative term for someone who behaves as if they know everything.
Hellion's user avatar
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