Dissimilar is an adjective.
If you use like or as, it's a simile.
The part of speech for this particular word is a noun.
part of speech
The part of speech for "answer" is a noun.
adverb
what part of speech is beneath
No. Dogs and cats are far too dissimilar biologically and cannot interbreed.
The opposite of dissimilar is similar.
The part of speech for "unfamiliar" is an adjective.
The part of speech of "came" is a verb.
The part of speech for "twirl" is a verb.
The part of speech for "explicit" is an adjective.