Dict: strongs - G4417

Strongs:

G4417 @ πταίω ptaiō ptah'-yo A form of G4098; to trip that is (figuratively) to err sin6 fail (of salvation): - fall offend stumble.

G679 @ ἄπταιστος aptaistos ap-tah'ee-stos From G1 (as a negative particle) and a derivative of G4417; not stumbling that is (figuratively) without sin: - from falling.