Falsely

FALSELY, adverb fols'ly.

1. In a manner contrary to truth and fact; not truly; as, to speak or swear falsely; to testify falsely

2. Treacherously; perfidiously.

Swear to me - that thou wilt not deal falsely with me.

[[Genesis 21#23|Genesis 21:23]].

3. Erroneously; by mistake.