bù​míng​bù​bái

vague

不明不白 bù​míng​bù​bái
vague
(idiom) unclear or obscure; to be vague or ambiguous in speech or thought
shady
(idiom) dubious or suspicious; lacking a legitimate origin or clear justification, such as money from an unknown source
without rhyme or reason
(idiom) for no apparent reason; to suffer or undergo something without knowing why

Frequency

Movie subtitles
0.240 per million appears in 0% of films
Written text
0.938 per million

Sources