So great as to be beyond measurement; immeasurable; limitless; boundless; incomprehensible.Of vast extent, bulk, or quantity; very great; huge; inordinate: as, an immense territory; an immense sum; an immense eater (a colloquial expression).Very good or fine; very striking, attractive, or interesting.Synonyms and Excessive, etc. See enormous.n. Infinite space; immensity.