penetrating or entering deeply into subjects of thought or knowledge; having deep insight or understanding

a profound thinker.

originating in or penetrating to the depths of one's being; profound grief.

being or going far beneath what is superficial, external, or obvious

profound insight.

of deep meaning; of great and broadly inclusive significance

a profound book.

pervasive or intense; thorough; complete

a profound silence.

extending, situated, or originating far down, or far beneath the surface

the profound depths of the ocean.

low

a profound bow.

deep.

something that is profound.

the deep sea; ocean.

depth; abyss.

adjective

ignorant , stupid , shallow , slight , mild , moderate , unemotional

adjective

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 , abysmal , buried , cavernous , fathomless , subterranean , yawning , abject , absolute , acute , consummate , deeply felt , deep-seated , exhaustive , extensive , extreme , far-reaching , great , hard , heartfelt , heartrending , hearty , keen , out-and-out * , pronounced , sincere , total , utter , intense , strong , bottomless , emotional , farreaching , heavy , moving , thoughtful , unfathomable