Strong's Concordance

Original word: ψευδώνυμος
Transliteration: pseudónumos
Definition (short): falsely
Definition (full): under a false name, falsely called

NAS Exhaustive Concordance

Word Origin: from pseudés and onoma
Definition: under a false name, falsely called
NASB Translation: falsely called (1).
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Strong's Exhaustive Concordance

From pseudes and onoma; untruly named -- falsely so called.

see GREEK pseudes

see GREEK onoma

KJV: O Timothy, keep that which is committed to thy trust, avoiding profane and vain babblings, and oppositions of science falsely so called:
NASB: O Timothy, guard what has been entrusted to you, avoiding worldly and empty chatter and the opposing arguments of what is falsely called "knowledge "--