Top Definition
1. a belief or doctrine that inherent differences among twins and singletons determine individual achievement, usually involving the idea that one's own multiplicity is superior and has the right to rule others.
2. hatred or intolerance of twins or non singletons.
My brother and I are not the same person you damn twinnist!
by John Craigmuffin September 14, 2006
4 Words related to twinnist

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