LSJ
ον, ready or sufficient for every battle, θράσος A. Ag. 169 (lyr.); epith. of Athena, Ar. Lys. 1321; esp. = παγκρατιαστής, fighting by all means, with all one΄s resources, Pl. Euthd. 271c, Theoc. 24.114, APl. 4.52 (Phil.), D.Chr. 8.19; τοὺς πέντε προεκαλεσάμην πάμμαχα Sammelb. 6222.22 (iii AD); so εἰς τὸ πάμμαχον ib. 26; ὁ παμμάχων κεραυνός AP 7.692 (Antip. or Phil.); metaph, οὐ φαῦλος ἀλλὰ π. ἀγὼν ὁ τῆς πολιτείας calling for all resources, Plu. 2.804b; also π ; ἀτυχίη incompetence ready for anything, Hp. Praec. 13.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)
Pape
mit Allen kämpfend, θράσος, Aesch. Ag. 163, von Pankratiasten, Plat. Euthyd. 271c, Theocr. 24.112, Antip.Thess. 68 (VII.692).
Pape, Griechisch-deutsches Handwörterbuch (3. Aufl., 1914)