enemy, foe

Strong’s Dictionary of Greek Words:

Number:
2190 (find all occurrences in KJV Bible)
Greek:
ἐχθρός
Transliteration:
echthros
Phonic:
ech-thros’
Meaning:
from a primary ἔχθω (to hate); hateful (passively, odious, or actively, hostile); usually as a noun, an adversary (especially Satan)
KJV Usage:
enemy, foe