understanding
From LSJ
English > Greek (Woodhouse)
substantive
mind, sense: P. and V. νοῦς, ὁ, γνώμη, ἡ, σύνεσις, ἡ. Ar. and P. διάνοια, ἡ, Ar. and V. φρήν, ἡ, or pl. (rare P.).
perception: P. and V. αἴσθησις, ἡ, P. φρόνησις, ἡ, V. αἴσθημα, τό.
experience: P. and V. ἐμπειρία, ἡ.
knowledge: P. and V. ἐπιστήμη, ἡ.
adjective
P. and V. συνετός, Ar. and P. φρόνιμος.
experienced: P. and V. ἔμπειρος, ἐπιστήμων.
without understanding: use adj., P. and V. ἀσύνετος, V. ἀξυνήμων; see foolish.