stultifyingly       
adverb  formal disapproving uk/ˈstʌl.tɪ.faɪ.ɪŋ.li/ us/ˈstʌl.tə.faɪ.ɪŋ.li/
 令人厌烦地;无聊地
in a way that makes you feel bored and unenthusiastic
  Why did they make the film so stultifyingly long?
 stultifyingly dull/boring 令人厌烦的枯燥/乏味 
 See: stultifying
 - More examples
- He insists on telling me every detail of his stultifyingly dull life.
- Kidman plays the stultifyingly prim Lady Sarah Ashley.
- She went to the Central School of Art, which she found stultifyingly academic.