Being deceitful is a form of dishonesty that involves deliberately deceiving or misleading someone. The crossword solutions for the term 'be deceitful' are 'LIE' (3 letters), 'PALTER' (6 letters), 'livealie' (8 letters), and 'tellalie' (8 letters). A LIE is an untruthful statement made with the intention to deceive. Paltering is a form of lying that involves making a false statement while knowing it is not true, but also implying that it is true. Livealie and tellalie are both forms of lying that involve telling a falsehood in order to avoid the truth.