Quick Definition
πρόθυμος, ον Adj eager, ready, willing
Strong's Definition
from 4253 and 2372; forward in spirit, i.e. predisposed; neuter (as noun) alacrity
KJV Usage: ready, willing
UBS Dictionary of the Greek New Testament
adjc. | -ον | θυμόομαι
25.69 · Attitudes and Emotions · Be Eager, Be Earnest, In a Devoted Manner
eager, eagerly, willing, willingly pertaining to being eager to do something It would be wrong to equate the meaning of πρόθυμος and προθύμως with ἑκούσιος, ἑκών, and ἑκουσίως (25.65), for πρόθυμος and προθύμως imply far more desire and eagerness, though both sets of terms are often translated in English as ‘willing’ or ‘willingly.’
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Thayer's Greek Lexicon
πρόθυμος, -ov, (πρό and θυμός), fr. [Soph. and] Hat. down, ready, willing: Mt. xxvi. 41; Mk. xiv. 88; neut. τὸ πρόθυμον, i. q. ἡ προθυμία : Ro. i. 15, as in Thue. 3, 82; Plat. lege. 9 p. 859b.; Eur. Med. vs. 178; Joseph. antt. 4, 8,13; Hdian. 8, 3, 15 [6 ed. Bekk.] (on which cf. Irmisch) ; 3 Mace. ν. 26.
Mounce Concise Greek Dictionary
πρόθυμος prothumos 3x
ready in mind, prepared, prompt, willing, Mt. 26:41; Mk. 14:38; τὸ πρόθυμον, i.q. ἡ προθυμία, readiness, eagerness of mind, Rom. 1:15*
Abbott-Smith Greek Lexicon
πρόθυμος, -ον,
[in LXX: I Ch 28:21, II Ch 29:31 (נָדִיב), Hb 1:8 (חוּשׁ), al.;]
willing, ready: Mt 26:41, Mk 14:38; neut., τὸ π. = ἡ προθυμία (Thuc., al., III Mac 5:26), οὕτως τὸ κατ’ ἐμὲ (= cl. τὸ ἐμὸν) π., Ro 1:15 (but v. ICC, in l.).†
Moulton & Milligan — Vocabulary of the Greek NT
πρόθυμος, “eager ’’: P Tebt I. 59° (B.c. 99) (= Witkowski?, p. 113) ἐν οἷς ἐὰν προσδέησθέ pov ἐπιτάσσοντές μοι προθυμότερον διὰ τὸ ἄνωθεν φοβεῖσθαι καὶ σέβεσθαι τὸ ἱερόν, ‘‘ whatever you may require, do not hesitate to command my services, because of old I revere and worship the temple ’’ (Edd.), P Oxy IIT. 473° (A.D. 138-160) πολὺ προθυμότερος ὥφθη ἀλειμμάτων ἀφθόνῳ χορη[γίᾳ, “πε appeared very eager in A.D.) (= II. p. 129) ἔλθε μοι πρόθυμος, ἱλαρός, ἀπήμαντος (“unharmed ’’), P Oxy I. 424 (A.D. 323) προθυμότατα τοὺς ἐφήβους [τ]ὰ γυμνι[κὰ] ἐπιδείκνυσθαι προσήκει, and OG/S 2218! (beg. iii/B.C.) δρῶντες οὖν αὐτὸν εὔνουν ὄντα καὶ πρόθυμον εἰς τὰ ἡμέτερα πράγματα.
Liddell-Scott-Jones — Greek-English Lexicon
πρόθυμος (prothumos) — eager. πρόθῡμος, ον, ready, willing, eager, π. εἰμι, with infinitive, ={προθυμέομαι}, [Refs 5th c.BC+]; π. ἔα πυθέσθαι I was eager to learn, [Refs 5th c.BC+]
2. with genitive objecti, eager for, ὧν π. ἦσθ᾽ ἀεί [Refs 5th c.BC+]
3. with Preps., ἐὰν γένῃ π. ἐς τὰ πράγματα [Refs 5th c.BC+]; πρὸς τὸν πόλεμον[Refs 5th c.BC+]
4. absolutely, [Refs 5th c.BC+]
II. bearing goodwill, wishing well, devoted, φύλαξ.. τῇ σῇ π. εἰς ὁδὸν κυναγία [Refs 5th c.BC+]; εἴς τινας[Refs 5th c.BC+]
III. adverb -μως readily, zealously, actively, [Refs 5th c.BC+]; π. υᾶλλον ἢ φίλως with more zeal than kindness, [Refs 5th c.BC+]; μάχεσθαι [Refs 5th c.BC+]; π. ἔχειν πρός τι [Refs 5th c.BC+]: comparative -ότερον[Refs 5th c.BC+]: superlative -ότατα[Refs 5th c.BC+]