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Synonyms

EST

1 American  
Or E.S.T.,

abbreviation

  1. Eastern Standard Time.

-est 2 American  

  1. a suffix forming the superlative degree of adjectives and adverbs.

    warmest; fastest; soonest.
-est 3 American  

  1. a native English suffix formerly used to form the second person singular indicative of verbs.

    knowest; sayest; goest.
est. 4 American  

abbreviation

  1. established.

  2. estate.

  3. estimate.

  4. estimated.

  5. estuary.

EST 1 British  

abbreviation

  1. Eastern Standard Time

  2. electric-shock treatment

  3. Estonia (international car registration)

"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
est 2 British  

abbreviation

  1. Also: estab.  established

  2. estimate(d)

"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
-est 3 British  

suffix

  1. forming the superlative degree of adjectives and adverbs

    shortest

    fastest
"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
-est 4 British  

suffix

  1. forming the archaic second person singular present and past indicative tense of verbs

    thou goest

    thou hadst
"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
est 5 British  
/ ɛst /

noun

  1. a treatment intended to help people towards psychological growth, in which they spend many hours in large groups, deprived of food and water and hectored by stewards

"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

Etymology

Origin of -est2

Middle English; Old English -est, -ost. Compare Greek -isto-

Origin of -est3

Middle English; Old English -est, -ast, -st, 2nd person singular present indicative endings of some verbs ( -s earlier verbal ending + -t, by assimilation from thū thou 1 ) and 2nd person singular past endings of weak verbs (earlier -es + -t )

Compare meaning

How does est compare to similar and commonly confused words? Explore the most common comparisons:

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

EST on Thursday, Feb. 12, and 5:15 a.m.

From Science Daily • Feb. 2, 2026

Analysts surveyed by The Wall Street Journal before the report’s release at noon EST had widely expected ending stocks to sink across the board, with 2025 crop yields lower amid larger projections for export sales.

From The Wall Street Journal • Jan. 12, 2026

EST and a suspect was taken into custody.

From Los Angeles Times • Dec. 12, 2025

EST on Friday, CBS News reported, citing Down Detector, an online service that tracks tech outages.

From Salon • Jan. 17, 2025

EST, the Atlas rocket boosted Friendship 7 into orbit like a champion archer hitting a bull’s-eye.

From "Hidden Figures" by Margot Lee Shetterly

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.