bù​dēng​dà​yǎ​zhī​táng

unpresentable

不登大雅之堂 bù​dēng​dà​yǎ​zhī​táng
unpresentable
not suitable for formal occasions or polite company due to being crude, coarse, or lacking in class
unrefined
not considered elegant or sophisticated enough for formal display or high society, particularly regarding artistic or literary works

Frequency

Written text
0.082 per million

Sources

Definitions
CC-CEDICT
Frequency data
BCC Corpus (BLCU)