"I have many things to speak and to judge concerning you, but He who sent Me is true; and the things which I heard from Him, these I speak to the world."
Strong's Concordance
Original word: ψευδώνυμος
Transliteration: pseudónumos
Definition (short): falsely
Definition (full): under a false name, falsely called
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 "--