Liddell-Scott-Jones

πολέμιος (polemios) warlike ^G:A

πολέμιος-ιος, α, ον,

also ος, ον [Refs 5th c.BC+]:— of or belonging to war, κάματοι [Refs 5th c.BC+]; ὅπλα Expl.Arch. de Délos [Refs]; τὰ π. war and its business, [Refs 5th c.BC+]

__II more frequently of or like an enemy, hostile, ἄνδρες [Refs 5th c.BC+]; ἄνδρα π. ἐχθρόν τε [Refs 5th c.BC+]; π. τινί hostile to one, [Refs 5th c.BC+]
__II.b frequently as substantive, enemy, [Refs 5th c.BC+]the enemy, [Refs 5th c.BC+]
__II.c τὸ φύσει π. natural hostility, [Refs]; τὸ π. τῶν Ἀθηναίων towards them, [Refs]
__II.2 generally, opposed, adverse, δύο.. ἐόντα -ώτατα [Refs 5th c.BC+]; δύο.. ἔτι πολεμιώτερα (i.e. γῆ καὶ θάλασσα)[Refs]most hurtful, [Refs 5th c.BC+]
__III of or from the enemy, φόβος [Refs 5th c.BC+]; πολέμιοςια, τά, enemy's wares, contraband, [Refs 5th c.BC+]; ἡ π. (i.e. γῆ, χώρα) the enemy's country, [Refs 5th c.BC+]
__IV adverb -ίως in hostile manner, φιλίως, οὐ π. [Refs 5th c.BC+]: superlative -ιώτατα, διακείμενος [Refs 1st c.BC+] —πολέμιοςιος is older than πολεμικός, being always used by [Refs 5th c.BC+] and Trag., and mostly by [πολέμιοςιος">Refs 5th c.BC+] is mostly used in the sense of hostile, πολεμικός in that of warlike, skilled in war.