Adverbs

(r)nastily, meanlyin a nasty ill-tempered manner“`Don't expect me to help you,' he added nastily”
(r)meanly, scurvily, baselyin a despicable, ignoble manner“this new leader meanly threatens the deepest values of our society”
(r)meanlypoorly or in an inferior manner“troops meanly equipped”
(r)meanly, humblyin a miserly manner“they lived meanly and without ostentation”