Definition of profound:
indistinct, key, complex, impenetrable, cardinal, gravid, lumbering, lowering, abstruse, subterranean, punishing, superficial, sullen, big, overweight, unintelligible, wakeless, labored, mysterious, informed, serious, learned, recondite, great, level-headed, discerning, levelheaded, intricate, hard, weighed down, sage, darksome, cloggy, grievous, muddy, thorough, intense, dense, central, backbreaking, clayey, enigmatical, reasoned, unfathomed, primal, intemperate, operose, dim, grave, involved, complicated, cloudy, reflective, sonorous, thoughtful, rudimentary, threatening, underlying, leaden, dark, expectant, turbid, heavy, with child, doubtful, strong, effectual, intimate, significant, laboured, heartfelt, fundamental, incomprehensible, easy, hidden, ponderous, solemn, large, enlightened, esoteric, silent, ambiguous, sound, shallow, scholarly, healthy, weighty, obscure, unplumbed, fleshy, arduous, unsounded, grueling, penetrating, important, gruelling, good, legal, toilsome, difficult, dusky, enceinte, deep, well-grounded, laborious, surface.
- deep (part of speech: adjective)
- intelligent (part of speech: adjective)
- "The Approach to Philosophy", Ralph Barton Perry.
- "The Heart of Unaga", Ridgwell Cullum.
- "The High Calling", Charles M. Sheldon.