To doubt; to waver in opinion; to hesitate or be uncertain (archaic or very formal).
From Latin 'dubitare,' meaning to doubt or waver. The English verb form follows Latin conjugation patterns and is now chiefly found in very formal, archaic, or academic writing.
While 'doubt' is the everyday verb, 'dubitate' persists in old texts and scholarly writing—it's the kind of word that makes you sound like you're quoting a 17th-century philosopher.
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