falsely
Definitions
In a manner that is not true, correct, or genuine.
In a way that is dishonest, treacherous, or deceitful.
Examples
The witness was accused of falsely testifying during the high-profile trial.
He felt betrayed after his colleague falsely claimed credit for his hard work.
Synonyms
dishonestly deceitfully erroneously untruthfully incorrectly mendaciously fraudulently
Antonyms
truthfully honestly accurately correctly genuinely veraciously rightly