FROM STRONG’S GREEK DICTIONARY (1890)

Strong’s Greek Dictionary (1890) — public domain, printed whole.

heilikrines εἰλικρινής — i-lik-ree-nace' — from heile (the sun's ray) and 2919; judged by sunlight, i.e. tested as genuine (figuratively):--pure, sincere.

see GREEK for 2919