idle - definition in the American English Dictionary - Cambridge Dictionaries Online

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English definition of “idle”

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idle

adjective  us   /ˈɑɪ·dəl/
not working, not active, or doing nothing: idle factories The machines are standing idle because there are no spare parts. Idle also means not useful or not based on fact: idle speculation
idleness
noun [U]  us   /ˈɑɪ·dəl·nəs/
idly
adverb  us   /ˈɑɪd·li, -əl·i/
I will not stand idly by while my business is being destroyed.

idle

verb [I]  us   /ˈɑɪd·əl/
If an engine idles, it is operating but not doing any work: Let the engine idle for a minute before you put the car in gear.
(Definition of idle from the Cambridge Academic Content Dictionary © Cambridge University Press)
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“idle” in American English

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