ἀμέριμνος G275
amérimnos · am-er'-im-nos · Adjective
from Α (as a negative particle) and μέριμνα; not anxious:--without care(-fulness), secure.
1 Occurrence in the King James Bible
1 Corinthians 7:32But I would have you without carefulness. He that is unmarried careth for the things that belong to the Lord, how he may please the Lord: