Strong's #2543: kaitoi (pronounced kah'-ee-toy)
from 2532 and 5104; and yet, i.e. nevertheless:--although.
Thayer's Greek Lexicon:
́
kaitoi
1) and yet, although
Part of Speech: particle
Relation: from G2532 and G5104
Usage:
This word is used 2 times:
Luke 12:54: "ye say, There cometh a shower; and so it is."
Hebrews 4:3: "into my rest: although the works were finished from"