A.like truth, i.e. likely, probable, reasonable, εἰ. (with or without ἐστί), c. inf. pres., aor., or fut., S.El.1026, A.Ag.575, Is.4.18; οὐ γὰρ εἰ., c. inf., S.Ph.230; οἷς εἰ. (sc. δοῦναι) ib.973; “ὥσπερ εἰ. ἦν” Ar.Fr.621, etc.: also pl., “ἐοικότα γάρ . . τυχεῖν” Pi.P.1.34.
2. neut. Subst., εἰκός, τό, likelihood, probability, τὰ οἰκότα likelihoods, Hdt. 1.155, etc.; “τὸ οὐκ εἰ.” Th.2.89; κατὰ τὸ εἰ. in all likelihood, Id.1.121; “ἐκ τοῦ εἰκότος” Id.4.17; “τῷ εἰκότι” Id.6.18; “παντὶ τῷ οἰκότι” Hdt.7.103; “τοῦ εἰκότος πέρα” S.OT74; τῷ εἰκότι χρῆσθαι, opp. ἀπόδειξιν λέγειν, Pl.Tht.162e: in Poets without Art., “λέγεις μὲν εἰκότα” S.Ph.1373; “εἰκὸς πέπονθα” E.IA501; ἤν γ᾽ ἐρωτᾷς εἰκότ᾽, εἰκότα κλύεις ib. 1134.
b. in Logic, probable proposition, opp. positive fact, Arist.APr.70a4, Rh.1357a34.