dissimilar in WordNet English dictionary

1. marked by dissimilarity
   "for twins they are very unlike"; "people are profoundly different"
   unlike  dissimilar  different 
   
2. not similar
   "a group of very dissimilar people"; "a pump not dissimilar to those once found on every farm"; "their understanding of the world is not so dissimilar from our own"; "took different (or dissimilar) approaches to the problem"
   dissimilar 
   
3. not alike or similar
   "as unalike as two people could be"
   unalike  dissimilar