Antonyms of noun untruthfulness

1 sense of untruthfulness

Sense 1
untruthfulness -- (the quality of being untruthful)
       Antonym of truthfulness (Sense 1)
      => truthfulness -- (the quality of being truthful)

Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun untruthfulness

1 sense of untruthfulness

Sense 1
untruthfulness -- (the quality of being untruthful)
       => dishonesty -- (the quality of being dishonest)