calm Definition in the Cambridge English Dictionary
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Definition of “calm” - English Dictionary

Definition of "calm" - American English Dictionary

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calmadjective [-er/-est only]

 us   /kɑm, kɑlm/
peaceful, ​quiet, or ​relaxed; without ​hurriedmovement, ​anxiety, or ​noise: The ​pilot said we’d have to make an ​emergencylanding, and the ​flightattendantstried to ​keep us calm. If ​weather is ​described as calm, it is not ​windy, and if the ​sea is ​described as calm, it is still or has only ​smallwaves: Our ​shiparrived at the Mississippi ​delta on a calm, ​clearnight.
calm
noun [U]  us   /kɑm, kɑlm/
Amid the calm, there was a ​sense that something could ​happen at any ​moment.
calmly
adverb  us   /ˈkɑm·li, ˈkɑlm-/
He calmly made both ​freethrows to ​win the ​game.
calmness
noun [U]  us   /ˈkɑm·nəs, ˈkɑlm-/
The calmness and ​professionalism of the ​crew gave us ​confidence.

calmverb [I/T]

 us   /kɑm, kɑlm/
to ​lessen someone's ​anxiety or make them more ​peaceful, ​quiet, or ​relaxed: [T] He ​tried his ​best to calm her (down). [I] I ​needed some ​time to calm down.
(Definition of calm from the Cambridge Academic Content Dictionary © Cambridge University Press)

Definition of "calm" - British English Dictionary

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calmadjective

uk   us   /kɑːm/
B1 peaceful, ​quiet, and without ​worry: He has a very calm ​manner. Now keep calm everyone, the ​police are on ​their way. without ​hurriedmovement or ​noise: After a ​night of ​fighting, the ​streets are now calm.B1 If the ​weather is calm, there is no ​wind, or if the ​sea or a ​lake is calm, it is still and has no ​waves.
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calmly
adverb uk   us   /ˈkɑːm.li/
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B2 in a ​quiet or ​relaxed way: She ​reactedsurprisingly calmly to the ​news of his ​death.
calmness
noun [U] uk   us   /ˈkɑːm.nəs/

calmverb [T]

uk   us   /kɑːm/
to ​stop someone ​feelingupset, ​angry, or ​excited: He ​tried to calm the ​screamingbaby by ​rocking it back and ​forth.calm sb's fears to make someone ​feel less ​worried about something
Phrasal verbs

calmnoun

uk   us   /kɑːm/
a ​quiet or ​peacefulperiod or ​situation: It was the calm of the ​countryside that he ​loved so much. a ​quiet and ​relaxedmanner
(Definition of calm from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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“calm” in American English

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