[ vast, vahst ]
/ væst, vɑst /

adjective, vast·er, vast·est.

of very great area or extent; immense: the vast reaches of outer space.
of very great size or proportions; huge; enormous: vast piles of rubble left in the wake of the war.
very great in number, quantity, amount, etc.: vast sums of money.
very great in degree, intensity, etc.: an artisan of vast skill.


Literary. an immense or boundless expanse or space.

Nearby words

  1. vassalage,
  2. vassalic,
  3. vassalize,
  4. vassar,
  5. vassar, matthew,
  6. vasthi,
  7. vastitude,
  8. vastity,
  9. vastly,
  10. vastus

Origin of vast

First recorded in 1565–75, vast is from the Latin word vastus empty, immense

Related forms Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for vast

British Dictionary definitions for vast


/ (vɑːst) /


unusually large in size, extent, degree, or number; immense
(prenominal) (intensifier)in vast haste


the vast mainly poetic immense or boundless space
British dialect a very great amount or number
Derived Formsvastity, nounvastly, adverbvastness, noun

Word Origin for vast

C16: from Latin vastus deserted

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for vast



1570s, from Middle French vaste, from Latin vastus "immense, extensive, huge," also "desolate, unoccupied, empty." The two meanings probably originally attached to two separate words, one with a long -a- one with a short -a-, that merged in early Latin (see waste). Very popular early 18c. as an intensifier. Related: Vastly; vastness.

Online Etymology Dictionary, © 2010 Douglas Harper