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

Definition of "decide" - American English Dictionary

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decideverb

 us   /dɪˈsɑɪd/
to ​choose between one ​possibility or another: [T] I decided I would ​try it. [+ to infinitive] In the end, we decided to go to the ​theater. [+ question word] We’re ​trying to decide how to ​proceed. [+ (that) clause] He decided (that) it was his ​business. If something decides a ​result in a ​competition, it ​causes that ​result: [T] A ​mistake by ​ourteam decided the ​game against us. A deciding ​factor is something so ​important that it ​forces a ​particulardecision: The deciding ​factor in ​choosing this ​school was that it was ​far from ​home.
(Definition of decide from the Cambridge Academic Content Dictionary © Cambridge University Press)

Definition of "decide" - British English Dictionary

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decideverb

uk   us   /dɪˈsaɪd/
A2 [I or T] to ​choose something, ​especially after ​thinkingcarefully about several ​possibilities: They have to decide by next ​Friday. It doesn't ​matter to me which one we have - you decide. [+ to infinitive] In the end, we decided to go to the ​theatre. [+ (that)] She decided (that) she would ​travel to ​India. [+ question word] I can't decide what to do. He can't decide whether to ​buy it. The ​committee decided in ​favour of (= made a ​formaljudgment to ​choose) the ​cheapestoption.C2 [T] to be the ​reason or ​situation that makes a ​particularresulthappen: The ​weather decided the ​outcome of the ​tennismatch. Tim's ​mistake decided the ​game (= ​caused him to ​lose).
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(Definition of decide from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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