Huge

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Middle English: shortening of Old French ahuge, of unknown origin.

wiktionary

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From Middle English huge, from Old French ahuge(“high, lofty, great, large, huge”), from a hoge(“at height”), from a(“at, to”) + hoge(“a hill, height”), from Frankish *haug, *houg(“height, hill”) or Old Norse haugr(“hill”); both from Proto-Germanic *haugaz(“hill, mound”), from Proto-Indo-European *kowkós(“hill, mound”), from the root Proto-Indo-European *kewk-. Akin to Old High German houg(“mound”) (compare related German Hügel(“hill”)), Old Norse haugr(“mound”), Lithuanian kaũkaras(“hill”), Old High German hōh(“high”) (whence German hoch), Old English hēah(“high”). More at high.

etymonline

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huge (adj.)

mid-12c., apparently a shortening of Old French ahuge, ahoge "extremely large, enormous; mighty, powerful," itself of uncertain origin. Related: Hugeness.