superterrific

Etymology tree
Proto-Indo-European *úp
Proto-Indo-European *-er
Proto-Indo-European *upér
Proto-Italic *super
Latin super
Latin super-lbor.
English super-
Proto-Indo-European *tres-
Proto-Indo-European *-yeti
Proto-Indo-European *-éyeti
Proto-Indo-European *troséyeti
Proto-Italic *trozeō
Latin terreō
Proto-Indo-European *dʰeh₁-der.
Proto-Italic *θakos
Proto-Italic *-fakos
Latin -ficus
Latin terrificusder.
French terrifiqueder.
English terrific
English superterrific
From super- + terrific.