ἄπειρος ápeiros

Meaning

inexperienced, i.e. ignorant

In the King James Version: unskilful

Derivation: from G1 (Α) (as a negative particle) and G3984 (πεῖρα);

Where it is used

• Hebrews 5:13 For everyone who lives on milk is still an infant, inexperienced in the message of righteousness.