wèi​tóng​jiáo​là

insipid

味同嚼蜡 (味同嚼蠟) wèi​tóng​jiáo​là
insipid expression
Dull, boring, and lacking in interest, especially when referring to speech or writing.
tasteless idiom
Lacking any flavor; tasting as if one is chewing wax.

Frequency

Movie subtitles
0.090 per million appears in 0% of films
Written text
0.119 per million

Sources

Definitions
CC-CEDICT