1. towering Deep, while an antonym of high in usage, may apply to the very same distance simply measured in an opposite direction, high applying to vertical distance measured from below upward, and deep Synonyms: high, elevated, exalted, noble, steep, towering, eminent, lofty, proud, tall, uplifted Antonyms: base, degraded, dwarfed, inferior, low, mean, short, stunted, deep, depressed