profound

Synonyms: abstruse acroamatic deep difficult discerning enlightened erudite esoteric heavy hermetic informed intellectual intelligent knowing knowledgeable learned mysterious occult orphic penetrating philosophical recondite reflective sagacious sage scholarly secret serious shrewd skilled subtle thorough weighty wise

Antonyms: ignorant stupid

Synonyms: abysmal buried cavernous deep fathomless subterranean yawning

Antonyms: shallow slight

Synonyms: abject absolute acute consummate deep deeply felt deep-seated exhaustive extensive extreme far-reaching great hard heartfelt heartrending hearty keen out-and-out pronounced sincere thorough total utter

Antonyms: mild moderate unemotional