Strong's #185: akeraios (pronounced ak-er'-ah-yos)
from 1 (as a negative particle) and a presumed derivative of 2767; unmixed, i.e. (figuratively) innocent:--harmless, simple.
Thayer's Greek Lexicon:
̓́
akeraios
1) unmixed, pure as in wines or metals
2) of the mind, without a mixture of evil, free from guile, innocent, simple
Part of Speech: adjective
Relation: from G1 (as a negative particle) and a presumed derivative of G2767
Citing in TDNT: 1:209, 33
Usage:
This word is used 3 times:
Matthew 10:16: "wise as serpents, and harmless as doves."
Romans 16:19: "wise unto that which is good, and simple concerning evil."
Philippians 2:15: "ye may be blameless and harmless, the sons of God, without rebuke, in"