could
[ koo d; unstressed kuh d ]
/ kʊd; unstressed kəd /
verb
a simple past tense of can1.
auxiliary verb
(used to express possibility): I wonder who that could be at the door. That couldn't be true.
(used to express conditional possibility or ability): You could do it if you tried.
(used in making polite requests): Could you open the door for me, please?
(used in asking for permission): Could I borrow your pen?
(used in offering suggestions or advice): You could write and ask for more information. You could at least have called me.
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anchorite
Origin of could
usage note for could
See care.
Words nearby could
cough mixture, cough reflex, cough syrup, cough up, coughlin, could, couldn't, couldn't care less, couldst, coulee, coulibiac
Definition for could (2 of 3)
can1
[ kan; unstressed kuh n ]
/ kæn; unstressed kən /
auxiliary verb, present singular 1st person can, 2nd can or (Archaic) canst, 3rd can, present plural can; past singular 1st person could, 2nd could or (Archaic) couldst, 3rd could, past plural could.
verb (used with or without object), present singular 1st person can, 2nd can or (Archaic) canst, 3rd can, present plural can; past singular 1st person could, 2nd could or (Archaic) couldst, 3rd could, past plural could; imperative can; infinitive can; past participle could; present participle cun·ning.
Obsolete. to know.
Origin of can
1usage note for can
Can1 and may1 are frequently but not always interchangeable in senses indicating possibility: A power failure can (or may ) occur at any time. Despite the insistence by some, that can means only “to be able” and may means “to be permitted,” both are regularly used in seeking or granting permission: Can (or May ) I borrow your tape recorder? You can (or may ) use it tomorrow. Sentences using can occur chiefly in spoken English. May in this sense occurs more frequently in formal contexts: May I address the court, Your Honor? In negative constructions, can't or cannot is more common than may not : You can't have it today. I need it myself. The contraction mayn't is rare.
Can but and cannot but are formal and now somewhat old-fashioned expressions suggesting that there is no possible alternative to doing something. Can but is equivalent to can only : We can but do our best. Cannot but is the equivalent of cannot help but : We cannot but protest against these injustices. See also cannot, help.
Can but and cannot but are formal and now somewhat old-fashioned expressions suggesting that there is no possible alternative to doing something. Can but is equivalent to can only : We can but do our best. Cannot but is the equivalent of cannot help but : We cannot but protest against these injustices. See also cannot, help.
Definition for could (3 of 3)
can2
[ kan ]
/ kæn /
noun
verb (used with object), canned, can·ning.
Origin of can
2before 1000; Middle English, Old English canne, cognate with German Kanne, Old Norse kanna, all perhaps < West Germanic; compare Late Latin canna small vessel
Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020
British Dictionary definitions for could (1 of 3)
could
/ (kʊd) /
verb (takes an infinitive without to or an implied infinitive)
used as an auxiliary to make the past tense of can 1
used as an auxiliary, esp in polite requests or in conditional sentences, to make the subjunctive mood of can 1 could I see you tonight?; she'd telephone if she could
used as an auxiliary to indicate suggestion of a course of actionyou could take the car tomorrow if it's raining
(often foll by well) used as an auxiliary to indicate a possibilityhe could well be a spy
Word Origin for could
Old English cūthe; influenced by would, should; see can 1
British Dictionary definitions for could (2 of 3)
can1
/ (kæn, unstressed kən) /
verb past could (takes an infinitive without to or an implied infinitive) (intr)
used as an auxiliary to indicate ability, skill, or fitness to perform a taskI can run a mile in under four minutes
used as an auxiliary to indicate permission or the right to somethingcan I have a drink?
used as an auxiliary to indicate knowledge of how to do somethinghe can speak three languages fluently
used as an auxiliary to indicate the possibility, opportunity, or likelihoodmy trainer says I can win the race if I really work hard
Word Origin for can
Old English cunnan; related to Old Norse kunna, Old High German kunnan, Latin cognōscere to know, Sanskrit jānāti he knows; see ken, uncouth
undefined can
See may 1
British Dictionary definitions for could (3 of 3)
can2
/ (kæn) /
noun
verb cans, canning or canned
Word Origin for can
Old English canne; related to Old Norse, Old High German kanna, Irish gann, Swedish kana sled
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
Idioms and Phrases with could (1 of 2)
could
see can (could) do with; see with half an eye, could. Also see under can; couldn't.
Idioms and Phrases with could (2 of 2)
can
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.