Strong's #5504: chthes (pronounced khthes)

of uncertain derivation; "yesterday"; by extension, in time past or hitherto:--yesterday.

Thayer's Greek Lexicon:

́

chthes

1) yesterday

Part of Speech: adverb

Relation: of uncertain derivation

Usage:

This word is used 3 times:

 

John 4:52: "he began to amend. And they said unto him, Yesterday at the seventh hour"
Acts 7:28: "as thou didst the Egyptian yesterday?"
Hebrews 13:8: "Christ the same yesterday, and today, and forever."