Strong's #275: amerimnos (pronounced am-er'-im-nos)
from 1 (as a negative particle) and 3308; not anxious:--without care(-fulness), secure.
Thayer's Greek Lexicon:
̓́
amerimnos
1) free from anxiety, free from care
Part of Speech: adjective
Relation: from G1 (as a negative particle) and G3308
Citing in TDNT: 4:593, 584
Usage:
This word is used 2 times:
Matthew 28:14: "come to the governor's ears, we will persuade him, and secure you."
1 Corinthians 7:32: "I would have you without carefulness. He that is unmarried careth for the things that belong to the"