the.com/equivocation

means The use of deliberately ambiguous or vague language to mislead, conceal the truth, or avoid commitment without technically lying.

from From Latin 'aequivocus,' meaning 'of equal voice' or 'of equal name' — built from 'aequus' (equal) plus 'vox' (voice). A word with two equal voices is one that can be heard two ways at once, which is precisely the trick: say something true in one sense while letting your listener swallow the other. It entered English through Late Latin and Old French in the medieval period, often in the worried company of logicians and theologians, who fretted over words that played both sides.