Top Definition
A terribly vain person who uses selfish and cruel emotional abuse to bend and manipulate lovers and friends. A Lanthis will then use these people and discard them when he's sucked them dry.
Pam to love-struck friend:
"Jane, you need to stay away from that guy. He may be hot but he's also a total Lanthis"
Jane:
"A Lanthis!? Thank goodness you told me, I'll stay well clear of him then"
by Chrisii January 15, 2007

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