Strong's #141: hairetikos (pronounced hahee-ret-ee-kos')
from the same as 140; a schismatic:--heretic (the Greek word itself).
Thayer's Greek Lexicon:
̔́
aihretikos
1) fitted or able to take or choose a thing
2) schismatic, factious, a follower of a false doctrine
3) heretic
Part of Speech: adjective
Relation: from the same as G140
Citing in TDNT: 1:184, 27
Usage:
This word is used 1 times:
Titus 3:10: "A man that is a heretic after the first and second admonition reject;"