Strong's G505 — ἀνυπόκριτος (adjective)
anupokritos (an-oo-pok'-ree-tos) adj.
1. undissembled, i.e. sincere
[from G1 (as a negative particle) and a presumed derivative of G5271]
KJV: without dissimulation (hypocrisy), unfeigned 
Root(s): G1, G5271 
Hebrew root: ὑποκρίνομαι
Occurrences: 6