adv. In a false manner; erroneously; not truly; perfidiously or treacherously. “O falsely, falsely murdered.” Shak. [ 1913 Webster ]
Oppositions of science, falsely so called. 1 Tim. vi. 20. [ 1913 Webster ]
Will ye steal, murder . . . and swear falsely ? Jer. vii. 9. [ 1913 Webster ]