say it: uhn-TROOTH-fuhl
untruthful is an adjective meaning "not expressing or given to expressing the truth". It carries one recorded sense.
not expressing or given to expressing the truth
“the statement given under oath was untruthful”
“an untruthful person”
Definitions, synonyms and semantic relations for untruthful come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.