Definition of slather
: a great quantity —often used in plural
Origin of slather
First Known Use: 1843
Simple Definition of slather
: to cover something with a thick layer of a liquid, cream, etc.
Examples of slather
We ate lobster slathered with butter.
First Known Use of slather
Seen and Heard
What made you want to look up slather? Please tell us where you read or heard it (including the quote, if possible).