Equivocate

Webster's Dictionary of the English Language

·vt To render equivocal or ambiguous.

II. Equivocate ·adj To use words of equivocal or doubtful signification; to express one's opinions in terms which admit of different senses, with intent to deceive; to use ambiguous expressions with a view to mislead; as, to equivocate is the work of duplicity.