无缘无故
wú yuán wú gù
for no reason at all
Character by character
无wú
no
no
缘yuán
cause
cause
无wú
no
no
故gù
reason
reason
Example
他不会无缘无故地发脾气。
He wouldn't lose his temper for no reason.
Tone: neutral.
Usage and origin
Everyday; often 无缘无故地 + verb.
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