/ Dictionary / Index U Unalachtigo: Meaning and Definition of Find definitions for: U•na•lach•ti•go Pronunciation: ("nu-läch'ti-gō"), [key] — pl. -gos, -go a member of a North American Indian people, one of the Delaware group. the Eastern Algonquian language of the Unalachtigo, originally spoken in the middle Delaware Valley. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. unaffected Unalaska Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language