falsely

adverb
1
wrongly; in a way that is based on something that is not true or not correct
به دروغ, اشتباه‌گونه
2
in a way that is not real or sincere
به‌طور غیرواقعی, به‌طور نادرست, کاذبانه, غیرصادقانه
She smiled falsely at his joke.