ἐάνπερ ὁ κτείνας συνέστιός ᾗ even if the murderer is your roommate.
Should it not be ἐάνπερ καί?
some people say that this περ is enough to render the meaning even if; I guess this is so since the context demands this meaning, however, why do;t the dictionaries register it?
See εἴπερ (which maybe LSJ should point to instead of εἰ.B.II in the ἐάνπερ stub). For εἴπερ, LSJ gives “esp. even if, even though, Il.7.117, Od.1.167, etc.” The two cited examples (in addition to the very many that could fit into the “etc.”) are:
Η117 εἴ περ ἀδειής τ’ ἐστὶ καὶ εἰ μόθου ἔστ’ ἀκόρητος,
“Even if he is fearless…”
α166 νῦν δ’ ὁ μὲν ὣς ἀπόλωλε κακὸν μόρον, οὐδέ τις ἡμῖν
α167 θαλπωρή, εἴ πέρ τις ἐπιχθονίων ἀνθρώπων
α168 φῇσιν ἐλεύσεσθαι· τοῦ δ’ ὤλετο νόστιμον ἦμαρ.
“…even if someone of Middle Earth should say he will come…”