profound

adj.

[1]	deep , unfathomable , abstruse , recondite , arcane , esoteric , intricate , knotty , involved , tricky , inscrutable , indecipherable , cabbalistic , incomprehensible , obscure , subtle , occult , secret , cryptic , puzzling , enigmatic , mystifying , mysterious
[2]	learned , scholarly , intellectual , erudite , discerning , astute , sagacious , sage , wise , penetrating , sharp , keen , insightful , analytical , knowledgeable , informed , well-informed , well-read
[3]	deep , fundamental , great , intense , sincere , heartfelt , keen , acute , utter , extreme , overpowering , overwhelming
[4]	utter , complete , total , perfect , absolute , thorough , thoroughgoing , out-and-out , downright , consummate , awful , terrible
[5]	heavy , sound , wakeless
[6]	unfathomed , unplumbed , unsounded