fountainhead

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

From fountain + head.

"The fountainhead!" said the Rector, who began not unnaturally to lose his temper. — The Perpetual Curate, Mrs. (Margaret) Oliphant
If the fountainhead be always full, the stream cannot be long empty.--Yours sincerely, S.T. — The Journal of Sir Walter Scott: From the Original Manuscript at Abbotsford, Walter Scott
The Upanishads, which are the fountainhead of Hindu thought and philosophy, are only the text-books and treasure-houses of philosophers and metaphysicians. — India, Its Life and Thought, John P. (John Peter) Jones

well, wellspring

Type a word, a sentence, a book title, or a link to an English article. WordNet and the Classics answer.

Try

A library of classics · a vault of words · instant etymology & meaning