Abbott-Smith Manual Greek Lexicon
ἐκ-δαπανάω (G1550)
1 *† ἐκ-δαπανάω , -ῶ strengthened form of δαπανάω , to spend wholly ; pass., with reflexive force, to spend oneself wholly : seq. ὑπέρ , II Co 12:15 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain