bù​xiáng

not clear

不详 不詳 bù​xiáng
not clear adjective
not quite clear; not well known; unknown; often used to describe missing information such as dates or identities
not in detail
not detailed; not explained in full; used in formal writing or letters to indicate that one is not going into detail
will not elaborate
used in letters and correspondence to mean "I will not go into further detail" (e.g. 略表不详 lüè​biǎo​bù​xiáng)

Frequency

Movie subtitles
1.52 per million appears in 1% of films
Written text
2.69 per million

Sources