Antonyms of adv intentionally

1 sense of intentionally

Sense 1
intentionally, deliberately, designedly, on purpose, purposely, advisedly, by choice, by design -- (with intention; in an intentional manner; "he used that word intentionally"; "I did this by choice")
       Antonym of unintentionally (Sense 1)
      => unintentionally, accidentally -- (without intention; in an unintentional manner; "she hit him unintentionally")

Synonyms of adv intentionally

1 sense of intentionally

Sense 1
intentionally, deliberately, designedly, on purpose, purposely, advisedly, by choice, by design -- (with intention; in an intentional manner; "he used that word intentionally"; "I did this by choice")