Being dissimilar refers to objects or things that are not the same. The antonyms for being dissimilar are similar, identical, and alike. Similar refers to objects or things that have some common features or characteristics. Identical refers to objects or things that are exactly the same in every aspect. Alike refers to objects or things that have a close resemblance or similarity. The antonyms for being dissimilar are often used to describe objects that share common features or traits. For example, two siblings might be alike in appearance, while two identical twins are identical in every aspect.