differentI like her haircut - it's different!
dissimilarThe twins may look alike, but they are quite dissimilar when it comes to personality.
diverseLondon is a culturally diverse city.
heterogeneousformalThey tested a heterogeneous population.
unusualCarina - that's quite an unusual name.
alternativeThe hotel's being renovated, so we're looking for an alternative venue.
distinctThe word has three distinct meanings.
distinctiveShe's got really distinctive handwriting.
unlikeDan's actually quite nice, unlike his father.