fly in the ointment

US /flaɪ ɪn ðɪ ˈɔɪnt.mənt/
UK /flaɪ ɪn ðɪ ˈɔɪnt.mənt/
"fly in the ointment" picture
1.

kusur, pürüz

a minor irritation or flaw that spoils an otherwise pleasant situation

:
The trip was perfect, except for one fly in the ointment: the weather was terrible.
Gezi mükemmeldi, tek kusur hava berbattı.
His bad mood was the only fly in the ointment during the celebration.
Kötü ruh hali, kutlama sırasındaki tek kusurdu.