alike
There is a superficial resemblance between the girls, but in fact they are in most ways unalike.
I deliberately chose to go to two places that were completely unalike.
The boys were so unalike that I wondered how they could possibly be brothers.
The two artists trained at the same school, but their works are altogether unalike.

SMART Vocabulary: related words and phrases

Different and difference
altered
alternative
anomalous
another
anything
disjunctive
disparate
disparately
disparity
dissimilar
make a distinction between something
make the differenceidiom
misc.
misfit
new
unreflective
unrepresentative
unrepresentativeness
unstandardized
untraditional