1. 不一样的;不相同的;不相似的
    If one thing is dissimilar to another, or if two things are dissimilar, they are very different from each other.

1. marked by dissimilarity

    e.g. for twins they are very unlike
           people are profoundly different

    Synonym: unlikedifferent

2. not alike or similar

    e.g. as unalike as two people could be

    Synonym: unalike

3. not similar

    e.g. 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