profound

(noun, adjective, verb)

adjective

1. intellectually deep; entering far into subjects; reaching to the bottom of a matter, or of a branch of learning; thorough.

- the differences are profound

- a profound insight

- a profound book

Similar word(s): intense, deep, thoughtful, scholarly

2. of the greatest intensity; complete

- a profound silence

- a state of profound shock

Similar word(s): intense

3. related the most important part of something; the essence.

- profound social changes

Similar word(s): important, significant, fundamental

4. coming from deep within one

- a profound sigh

Similar word(s): deep

5. (of sleep) deep and complete

- fell into a profound sleep

Similar word(s): deep, heavy, sound, wakeless

6. situated at or extending to great depth; too deep to have been sounded or plumbed

- the profound depths of the sea

Similar word(s): deep, unfathomed, unplumbed, unsounded

noun

1. (obsolete) The deep; the sea; the ocean.

2. (obsolete) An abyss.

verb

1. (obsolete) To cause to sink deeply; to cause to dive or penetrate far down.

2. (obsolete) To dive deeply; to penetrate.