不好不壞

不好不坏
bùhǎobùhuài

so-so; neither good nor bad

Wiktionary

Entry Composition

=1 不好 bùhǎo no good
=1 不好 bùhào to dislike; to be uninterested in
2 不 bù
  1. no; not so
  2. (bound form) not; un-
3 壞 huài
  1. bad
  2. spoiled
  3. broken
  4. to break down
  5. (suffix) to the utmost