Adverb
In a nasty manner.
Source: Webster's dictionaryEven when people act nastily to you, don't condemn them or retaliate. Albert Ellis
`Don't expect me to help you,' he added nastily Source: Internet
My up-to-now unfamiliarity with this one isn’t for lack of trying; I’d been trying to track down a copy of Terry Southern’s The Magic Christian for years, scouring old bookstores for tattered paperback copies of the author’s nastily satirical opus. Source: Internet
You may try to bumble along happily, pretending it´s not here, but before you know it, it will get you in the neck, nastily. Source: Internet