the starting point, source, or historical roots of something

possessing or displaying vast and deep knowledge or learning

personal name of the first Tang emperor Gaozu [[唐高祖|唐高祖|Tang2 Gao1 zu3]] (566-635), who reigned 618-626

Tao Yuanming (c. 365-427), Jin dynasty writer and poet

Liu Yuan (c. 251–310), warlord at the end of the Western Jin dynasty [[西晋|西晉|Xi1 Jin4]], founder of Cheng Han of the Sixteen Kingdoms [[成汉|成漢|Cheng2 Han4]] (304–347)

a deep chasm or the deepest part of a body of water

Yan Yuan (521-481 BC), disciple of Confucius, also known as Yan Hui ([[颜回|顏回|Yan2 Hui2]])

extremely cautious and wary, acting with great trepidation as if on the brink of a deep abyss

a deep pool or a thicket where fish or animals congregate

Obuchi (Japanese surname)

Obuchi Keizo (1937-2000), Japanese politician, prime minister 1998-2000

a huge disparity or gap between two things, as far apart as heaven and the deep abyss

vast and profound

erudite and sophisticated

deep and profound meaning

profound or erudite plans

deep and long-standing, especially referring to history or origins

clear, deep water

deep springs; source

Better to take practical steps to achieve one's aim than to merely stand by and wish for success.

honest and far-seeing

an abyss or deep whirlpool

(literary) (of a person's mind or intelligence) deep and insightful

a deep valley; abyss

rich and variegated

broad and extensive (of knowledge, etc.)

differing as widely as heaven and the deep sea; describing a massive disparity or gap

vast and profound

literally, a deep abyss and the vast ocean

deep and extensive, especially in reference to knowledge, wisdom, or learning; erudite

deep and still; profound

to have a serene yet formidable demeanor; to have a commanding presence

profound and deep, especially in intellectual, philosophical, or mysterious contexts

profound thoughts or ideas