Abbott-Smith Manual Greek Lexicon
ἁπλοῦς (G573)
2 ἁπλοῦς , -ῆ, -οῦν (contr. fr. -όος ; ἁ.- cop., πλόος ), [in LXX: Pr 11:25 *;] simple , single : in a moral sense ( DCG , ii, 628 f.), ἀφθαλμός , Mt 6:22 , Lk 11:34 . (In π. of a marriage dowry, v. MM, s.v.).† SYN. : ἄδολος , ἄκακος , ἀκέραιος (Tr., Syn. , § lvi; Cremer, 107, 639).
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain