αἰτιο-λογικός · aitio-logikos — LSJ
ready at giving the cause, inquiring into causes, αἰτιολογικώτατος, of Aristotle, D.L. 5.32; causal, τρόπος Epicur. Nat. 144 G.:—Subst., τὸ -κόν investigation of causes, Str. 2.3.8.
Gramm., causal, σύνδεσμοι, σύνταξις, etc., A.D. Conj. 231.4, al., Adv. 200.2. Adv. -κῶς Id. Synt. 320.3.