profound Synonyms

sound heavy unfathomed unplumbed unsounded fundamental seismic sensitive serious scholastic severe significant sincere solid sophisticated scholarly sapiential sapient penetrating penetrative percipient perspicacious philosophic philosophical profoundness punishing radical recondite sage pedagogic sounder yawning unfathomable firsthand te backbreaking unbearable well done soulful Solomonic deep-seated wakeless wise weighty soundless subaqueous subdolous subterranean subterraneous subterrene