wellspring

UK: /ˈwɛlˌsprɪŋ/ US: /ˈwɛlˌsprɪŋ/ ,(wel′spring′)

WordReference Random House Learner's Dictionary of American English © 2026

well•spring /ˈwɛlˌsprɪŋ/   n. [countable]

1. Geography the source of a spring, stream, or river.
2. a continuous supply that never seems to run out.

WordReference Random House Unabridged Dictionary of American English © 2026

well•spring  (wel′spring′), n. 

1. Geography the head or source of a spring, stream, river, etc.;
   fountainhead.
2. a source or supply of anything, esp. when considered inexhaustible:
   a wellspring of affection.

• bef. 900; Middle English welle spring, Old English wyllspring; see well², spring

Collins Concise English Dictionary © HarperCollins Publishers::

wellspring / ˈwɛlˌsprɪŋ/ noun

1. the source of a spring or stream; fountainhead
2. a source of continual or abundant supply

Etymology: Old English welspryng, wylspring; see well², spring