nastily /BrE ˈnɑːstɪli 
, AmE ˈnæstəli/
adverb
1 (unkindly) [behave, speak, laugh] d'une façon désagréable
to say sth nastily dire qch d'un ton sarcastique
2 (severely) [leak, crack] sérieusement
nastily
English → French
Oxford English–French