equivocation
definition
the use of ambiguous language to conceal the truth or to avoid committing oneself
example
The politician's equivocation during the debate made it hard to understand his true opinion.
synonyms
ambivalenceprevaricationevasion
word origin — from Latin 'aequivocatio', from 'aequivocare' meaning 'to call the same' (aequus 'equal' + vocare 'to call')