凭空

[píng kōng]

without foundation

凭空[píngkōng]

-withoutground[basis];outofthevoid;outofthinair;withoutfoundation;groundless;baseless:
emergeoutofthevoid;凭空出现
creategroundlessrumours;凭空杜撰

他凭空编造了那套谎言。
The lie was made by him out of whole cloth.

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