est

UK: /ˌiːɛsˈtiː/

Collins Concise English Dictionary © HarperCollins Publishers::

est abbreviation

1. Also: estab established
2. estimate(d)

WordReference Random House Learner's Dictionary of American English © 2025

EST or E.S.T., an abbreviation of:

1. Time Eastern Standard Time.

-est¹, suffix. 

1. -est is regularly used to form the superlative form of short adjectives and adverbs: fast + -est → fastest;
   soon + -est → soonest;
   warm + -est → warmest.

est.,  an abbreviation of:

1. established.
2. estate.
3. estimate.
4. estimated.

WordReference Random House Unabridged Dictionary of American English © 2025

EST ,

1. Time Eastern Standard Time.

Also, E.S.T., e.s.t. 
-est¹ :

1. a suffix forming the superlative degree of adjectives and adverbs:
   warmest;
   fastest;
   soonest.

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

-est² :

1. a native English suffix formerly used to form the second person singular indicative of verbs:
   knowest;
   sayest;
   goest.

Also, -st. 

• Old English -est, -ast, -st, 2nd pers. singular present indicative endings of some verbs (-s earlier verbal ending + -t, by assimilation from thū thou¹) and 2nd pers. singular past endings of weak verbs (earlier -es + -t) Middle English

est. ,

1. established.
2. estate.
3. estimate.
4. estimated.
5. estuary.

Collins Concise English Dictionary © HarperCollins Publishers::

EST abbreviation

1. Eastern Standard Time
2. electric-shock treatment

Collins Concise English Dictionary © HarperCollins Publishers::

-est suffix

1. forming the superlative degree of adjectives and adverbs: shortest, fastest

Etymology: Old English -est, -ost

-est, -st suffix

1. forming the archaic second person singular present and past indicative tense of verbs: thou goest, thou hadst

Etymology: Old English -est, -ast