infelicity       
noun [ C usually plural ]  formal uk/ˌɪn.fəˈlɪs.ə.ti/ us/ˌɪn.fəˈlɪs.ə.t̬i/
 不合适,不恰当
the fact that something is not suitable or correct in a situation
  His article was full of mistakes and verbal infelicities (= unsuitable expressions). 他的文章充满了错误和不恰当的措辞。 
 There are minor infelicities and inconsistencies in the book. 书中有一些微小的不妥和不一致之处。 
 See: infelicitous
 - More examples
 - We have corrected errors, shifted misplaced emphases, and rooted out infelicities in editing the essays.
 - True, there are occasional infelicities, but it makes an entertaining and at times provocative piece of fiction.
 - He pointed out the film's historical infelicities.