unprepossessing

US /ˌʌn.priː.pəˈzes.ɪŋ/
UK /ˌʌn.priː.pəˈzes.ɪŋ/
"unprepossessing" picture
1.

poco atractivo, desagradable

not attractive or appealing to the eye

:
The old house was rather unprepossessing from the outside.
La casa antigua era bastante poco atractiva por fuera.
Despite his unprepossessing appearance, he was a brilliant scientist.
A pesar de su apariencia poco atractiva, era un científico brillante.