untruthfully
🇺🇸
/ʌnˈtruːθfəli/
🇬🇧
/ʌnˈtruːθfəli/
in a way that is not honest or accurate
He lied untruthfully about his whereabouts during the incident.
彼はその事件の間、自分の居場所について不実に嘘をついた。