νήπιος, -α, -ον
[in LXX chiefly for עוֹלֵל, also for פְּתִי, etc. ;]
infant; of children and minors: Mat.21:16 (LXX), 1Co.13:11, Gal.4:1 (see Lft., in l). Metaphorical, childish, unskilled, simple (Psa.19:8, Pro.1:32 al.): Mat.11:25, Luk.10:21, Rom.2:20, Gal.4:3, Eph.4:14, 1Th.2:7 (WH, fox ἤπιοι); opposite to τέλειος, Heb.5:13; ν. ἐν Χριστῷ, 1Co.3:1.†
(AS)