stick out like a sore thumb

English edit

Sigginshaggard Castle, an isolated tower house in a pasture east of Taghmon in Ireland

stick out like a sore thumb (third-person singular simple present sticks out like a sore thumb, present participle sticking out like a sore thumb, simple past and past participle stuck out like a sore thumb)

(simile) Be very noticeably different, especially in a negative way; to be particularly obtrusive, conspicuous, blatant, or prominent; to attract undue attention or notice.
Synonym: stick out a mile
- 2011 December 15, Felicity Cloake, “How to cook the perfect nut roast”, in Guardian‎^[1]:
  The parsnip, stilton and chestnut combination may taste good, but it's not terribly decorative. In fact, dull's the word, a lingering adjectival ghost of nut roasts past that I'm keen to banish from the table. Mary Berry wraps her version in strips of chargrilled aubergine but, although it looks rather smart, I worry that something so Mediterranean will stick out like a sore thumb on the plate, given that many vegetarians want to enjoy the same roast potatoes, sprouts and sauces as everyone else. Instead, inspired by the stuffed cabbage rolls eaten at Christmas in the Balkans and Eastern Europe, I use blanched savoy cabbage leaves to wrap my parsnippy parcel, adding a touch of festive greenery to the dish.

be very noticeably different