because, else, for that (then, -asmuch as), otherwise, seeing that, since, when

Strong’s Dictionary of Greek Words:

Greek:
ἐπεί
Transliteration:
epei
Phonic:
ep-i’
Meaning:
from 1909 and 1487; thereupon, i.e. since (of time or cause)
KJV Usage:
because, else, for that (then, -asmuch as), otherwise, seeing that, since, when