rude slang An instigator who exacerbates a tense or otherwise difficult situation. Primarily heard in UK. Ryan is a shit-stirrer who always tries to encourage guys to fight.If you want a drama-free party, don't invite Kaitlin—she's such a shit-stirrer.
a shit-stirrer
(mainly British taboo!)
someone who makes trouble for another person, especially by saying unpleasant things about them What a shit-stirrer - she's gone and told his wife that she saw him with another woman at the party.