profound

US /prəˈfaʊnd/
UK /prəˈfaʊnd/
"profound" picture
1.

very great or intense

:
The discovery had a profound impact on scientific thought.
She felt a profound sense of relief.
2.

(of a state, quality, or emotion) very great or intense

:
His death had a profound effect on her.
The book offers profound insights into human nature.