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Want to find out what does the word deep mean? We gathered all the possible definitions of the word deep on our website. Our definition dictionary is updated all the time with new definitions and is ready to help you.

deep

Part of speech: Adjective

Extending far below the surface; as, a deep well; extending far back; as, a deep, lot; penetrating; sagacious; profound; difficult to understand; as philosophy is a deep subject; absorbed; grave in tone, or low in pitch; intense; heavy; as, a deep sleep; strongly colored.

Part of speech: Noun

That which extends far downward; a great body of water; an abyss; the culmination; as, the deep of night.

Part of speech: Noun

Deepness.

Usage examples "deep":