From out of left field; off-the-wall; unconventional.
Showing variety, diverse.
Showing deviation or disagreement.
Covariant and/or contravariant.
Something that is slightly different from a type or norm.
A different sequence of a gene (locus).
A variable that can hold any of various unrelated data types.
One of a set of words or other linguistic forms that conveys the same meaning or serves the same function.