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κέν

Γελᾷ δ' ὁ μωρός, κἄν τι μὴ γέλοιον ᾖ -> The fool laughs even when there's nothing to laugh at
Menander

German (Pape)

[Seite 1416] vor Vocalen, = κέ, w. m. s.

French (Bailly abrégé)

v. κέ.

English (Autenrieth)

enclitic modal adv. indicating a condition; essentially equivalent to ἄν, but of more frequent occurrence, esp. in affirmative sentences, and sometimes found in combination with ἄν, Il. 11.187, Il. 13.127, Il. 24.437, Od. 5.361, ζ 2, Od. 9.334. Homer uses κέν, like ἄν, with the fut. indic. and w. the subj. in independent sentences, καί κέ τις ὧδ' ἐρέει, ‘thus many a one will be like to say,’ Il. 4.176 ; ἐγὼ δέ κ' ἄγω Βρῖσηΐδα, ‘just as certainly will I,’ etc., Il. 1.184. With inf., Il. 22.110. See ἄν.
see κέ.

Russian (Dvoretsky)

κέν: перед гласными = κέ.