אין to negate, deny, nullify.
    — Pi. - אִיֵּן he negated, denied.
    — Pu. - אֻיַּן was negated, was denied.
    — Hith. - הִתְאַיֵּן was annihilated. [Denominated from אַיִן ᴵ.] Derivatives: אִיּוּן, מְאֻיָּן, הִתְאַיְּנוּת.