Strong's #4212: posakis (pronounced pos-ak'-is)
multiplicative from 4214; how many times:--how oft(-en).
Thayer's Greek Lexicon:
́
posakis
1) how often
Part of Speech: adverb
Relation: multiplicative from G4214
Usage:
This word is used 3 times:
Matthew 18:21: "to him, and said, Lord, how oft shall my brother sin against"
Matthew 23:37: "them which are sent unto thee, how often would I have gathered thy children together,"
Luke 13:34: "them that are sent unto thee; how often would I have gathered thy children together,"