can

¹can

verb \kən, ˈkan also ˈken; dialect ˈkin\

past could\kəd, ˈku̇d\ present singular & plural can

Definition of CAN

transitive verb

1

obsolete : know, understand

2

archaic : to be able to do, make, or accomplish

intransitive verb

archaic : to have knowledge or skill

verbal auxiliary

1

a : know how to <she can read> b : be physically or mentally able to <he can lift 200 pounds> c —used to indicate possibility <do you think he can still be alive> <those things can happen> ; sometimes used interchangeably with may d : be permitted by conscience or feeling to <can hardly blame her> e : be made possible or probable by circumstances to <he can hardly have meant that> f : be inherently able or designed to <everything that money can buy> g : be logically or axiologically able to <2 + 2 can also be written 3 + 1> h : be enabled by law, agreement, or custom to

2

: have permission to —used interchangeably with may <you can go now if you like>

Usage Discussion of CAN

Can and may are most frequently interchangeable in senses denoting possibility; because the possibility of one's doing something may depend on another's acquiescence, they have also become interchangeable in the sense denoting permission. The use of can to ask or grant permission has been common since the 19th century and is well established, although some commentators feel may is more appropriate in formal contexts. May is relatively rare in negative constructions (mayn't is not common); cannot and can't are usual in such contexts.

Origin of CAN

Middle English (1st & 3d singular present indicative), from Old English; akin to Old High German kan (1st & 3d singular present indicative) know, am able, Old English cnāwan to know — more at know

First Known Use: before 12th century