3. Obs. Wicked; evil. Naughtily, adv. Naughtiness, n. Thesaurus Antonyms Related Words Synonyms Legend: Adj. 1. Naughty - suggestive of sexual impropriety; a blue movie blue jokes he skips asterisks and gives you the gamy details a juicy scandal a naughty wink naughty words racy anecdotes a risque story spicy gossip sexy - marked by.