IPA: //ˈslændərər//
KK: /ˈslændərər/
A person who makes false statements about someone to damage their reputation.
The slanderer spread lies about her former friend, causing a lot of trouble.
Slanderer → It is formed from "slander" (from Old French *esclandre*, meaning to defame or speak ill of) and "-er" (meaning a person who). A slanderer is a person who speaks ill of someone, causing harm to their reputation.
Think of someone who 'defames' ('slander') another person — the '-er' just means a person. A slanderer is someone who speaks ill of others.