miào​bù​kě​yán

too wonderful for words

妙不可言 miào​bù​kě​yán
too wonderful for words
indescribably beautiful or ingenious; so wonderful that it is impossible to express in speech, sometimes used ironically to mean marvelous

Frequency

Movie subtitles
1.46 per million appears in 1% of films
Written text
0.765 per million

Sources