Scurrilous
/ˈskʌr.ə.ləs/ adjective hardMaking false or insulting statements about someone in order to damage their reputation.
The tabloid ran a scurrilous story about the actor's finances with no evidence to back it up.
Memory Trick
Sounds like 'squirrel-ous' - imagine gossip scurrying around like a squirrel, spreading nasty rumors from tree to tree.