Quick Definition
I am furiously angry with
Strong's Definition
to be in a furious fight, i.e. (figuratively) to be exasperated
Derivation: from a presumed compound of G2372 (θυμός) and G3164 (μάχομαι);
KJV Usage: be highly displeased
Thayer's Greek Lexicon
θυμομαχέω, θυμομάχω; (θυμός and μάχομαι); to carry on war with great animosity (Polybius, Diodorus, Dionysius Halicarnassus, Plutarch); to be very angry, be exasperated (A. V. highly displeased): τίνι, with one, Act_12:20. Cf. Kypke, Observations, ii, p. 62f
Mounce Concise Greek Dictionary
θυμομαχέω thumomacheō 1x
to wage war fiercely; to be warmly hostile to, be enraged against, Act_12:20
Abbott-Smith Greek Lexicon
† θυμομαέω , -ῶ
(θυμός , μάχομαι ),
to fight desperately, have a hot quarrel: c. dat. pers ., Act_12:20 .†
Liddell-Scott — Intermediate Greek Lexicon
θυμομαχέω θυ_μο-μα^χέω, "to fight desperately", NTest. , Plut.
STEPBible — Tyndale Abridged Greek Lexicon
θυμομαέω, -ῶ
(θυμός, μάχομαι),
to fight desperately, have a hot quarrel: with dative of person(s), Act.12:20.†
(AS)