Lexical Definition

‎ἀπείραστος‎ apeírastos (ap-i'-ras-tos) untempted ^G:A
from ‎Α‎ (as a negative particle) and a presumed derivative of ‎πειράω‎

not to be tempted.

• untried, i.e. not temptable

Abbott-Smith

*† ἀπείραστος, -ον (< πειράζω; for cl. ἀπείρητος, < πειράω),
untempted, untried, without experience: Ja 1:13 (v. Hort, in l.; MM, VGT, s.v.).†

Abbott-Smith References

Liddell-Scott-Jones

ἀπείραστος, ον,

incapable of being tempted, κακῶν[NT]

__II without experience, τῶν ἀβουλήτων[Refs 4th c.AD+]
__III not experienced, [Refs 2nd c.AD+]; untried, τέχνη[Refs 5th c.BC+]

_{LSJ Scripture Refs: Jas.1.13}