Entry Word: deep

Function: adjective

Meaning: 1 extending far downward or inward <they dropped their bucket down a deep well> <the knife made a deep cut into the wood>

Synonyms abysmal, bottomless

Related Words abyssal, unfathomable; boundless, endless, immeasurable, inestimable, infinite, limitless, measureless, unlimited, vast

Near Antonyms depthless, two-dimensional; even, flat, flush, horizontal, level, plane, smooth; confined, finite, limited, measured, restricted

Antonyms shallow, shoal, skin-deep, superficial, surface

2 having a low musical pitch or range <the tour guide had a very deep voice>

Synonyms bass, low, throaty

Related Words gruff, hoarse, husky, rough

Near Antonyms squeaking, squeaky, squealing, thin; earsplitting, penetrating, piercing, strident; peeping, tinny

Antonyms acute, high, high-pitched, piping, sharp, shrill, treble

3 being beyond one's powers to know, understand, or explain <a deep, dark secret that he took to his grave> — see mysterious 1
4 difficult for one of ordinary knowledge or intelligence to understand <her poetry is now regarded as sentimental and not very deep> — see profound 1
5 having an often intentionally veiled or uncertain meaning <one of those deep passages in the Bible that can be interpreted in any number of different ways> — see obscure 1
6 extreme in degree, power, or effect <fell into a deep sleep after taking the potion> — see intense