English → French
ugly /BrE ˈʌɡli 
, AmE ˈəɡli /
adjective
1 (hideous) [person, appearance, furniture, building, place] laid; [sound] désagréable; [wound] vilain (before n)
to be an ugly sight être hideux à voir
2 (vicious) [situation, conflict] dangereux/dangereuse; [tactics, campaign] bas/basse; [accusation] vicieux/vicieuse; [passion, violence] effroyable
the situation turned ugly la situation a dégénéré
to give sb an ugly look regarder qn d'un sale œil
he had an ugly expression on his face/an ugly look in his eye il avait l'air méchant/l'œil méchant
to be in an ugly mood [group, mob] gronder; [individual] être d'humeur massacrante
the ugly face of l'aspect inacceptable de
3 (repugnant) [incident, scene, crime] déplorable
Idioms
an ugly customer
un sale type ;
he looks like an ugly customer
il a une sale tronche
as ugly as sin
laid comme un pou
racism/elitism rears its ugly head
on voit surgir le spectre du racisme/de l'élitisme