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1.
Word used to describe something that is your least favorite. Primarily to describe things and preferences, but can also be used to refer to people.

To say most favorite or absolute favorite, people often say "fave". Similarly, for one's best friend they might say "bestee".
"There is nothing good about alfalfa sprouts. They get stuck in my teeth and make all my food taste like dirt. Definitely my leastee veggie."
by basement jez March 01, 2010