profound

adjective1 of 3

showing a lot of deep knowledge or thought

• “That incident had a profound effect on my life.”Tatoeba
• “The most profound changes are internal, not external.”Tatoeba

Sentences from Tatoeba show real usage. A word can have several meanings, so a sentence may use another one.

noun2 of 3

The deep; the sea; the ocean.

verb3 of 3

To cause to sink deeply; to cause to dive or penetrate far down.