Quick Definition
I do that which is good
Strong's Definition
to be a well-doer (as a favor or a duty)
Derivation: from G17 (ἀγαθοποιός);
KJV Usage: (when) do good (well)
Thayer's Greek Lexicon
ἀγαθοποιέω, (ῶ; 1 aorist infinitive ἀγαθοποιῆσαι; (from ἀγαθοποιός);
1. to do good, do something which profits others: Mar_3:4 (Tdf. ἀγαθόν ποιῆσαι; Luk_6:9); to show oneself beneficent, Act_14:17 Rec.; τινα, to do some one a favor, to benefit, Luk_6:33; Luk_6:35, (equivalent to δΗιθΔια, Zep_1:12; Num_10:32; Tob_12:13, etc.).
2. to do well, do right: 1Pe_2:15; 1Pe_2:20 (opposed to ἁμαρτάνω); ; 3Jn_1:11. (Not found in secular authors, except in a few of the later in an astrological sense, to furnish a good omen.)
Mounce Concise Greek Dictionary
ἀγαθοποιέω agathopoieō 9x
to do good, do well; to do what is morally correct ( 1Pe_2:15 ; 1Pe_2:20 )
Abbott-Smith Greek Lexicon
ἀγαθο -ποιέω , -ῶ
( = cl . ἀγαθὸν ποιεῖν , εὐεργετεῖν ),
[in LXX : Num_10:32 , Jdg_17:13 A, Ze 1:12 ( H3190 hi .), Tob_12:13 B, 1Ma_11:33 , 2Ma_1:2 * ;]
to do good;
(a) uni v . : 1Pe_2:15 ; 1Pe_2:20 , 1Pe_3:6 ; 1Pe_3:17 , 3Jn_1:11 ;
(b) for another's benefit: Mar_3:4 ( T , ἀγαθὸν ποιῆσαι ), Luk_6:9 ;
( c ) acc pers ., Luk_6:33 ; Luk_6:35 ( Cremer , 8).†
*† ἀγαθουργέω , -ῶ ,
contracted form (rare, v. WH , App ., 145) of ἀγαθοερ - ( q.v. ),
to do good: Act_14:17 .†
Liddell-Scott — Intermediate Greek Lexicon
ἀγαθοποιέω "to do good", NTest. ; ἀγ. τινά "to do good to", id=NTest. "to do well, act rightly", id=NTest.
STEPBible — Tyndale Abridged Greek Lexicon
ἀγαθὀ-ποιέω, -ῶ (= cl. ἀγαθὸν ποιεῖν, εὐεργετεῖν),
[in LXX: Num.10:32, Jdg.17:13 A, Zep.1:12 (יטב hi.), Tob.12:13 B, 1Ma.11:33, 2Ma.1:2 * ;]
to do good;
__(a) univ.: 1Pe.2:15, 20, 3:6, 17, 3Jo.11;
__(b) for another's benefit: Mrk.3:4 (T, ἀγαθὸν ποιῆσαι), Luk.6:9;
__(with) accusative of person(s), Luk.6:33, 35 (Cremer, 8).
† (AS)