"feline" is to "cat" as "???" is to "monkey" [closed]

I have been unable to think of a word which describes this. Does someone know the answer? Is it simian?

The answer is of course simian. Wiktionary has:

Simian

Etymology

From Latin sīmia ‎(“ape, monkey”), from Ancient Greek σιμός ‎(simós, “snub-nosed”).

Adjective

1. Of or pertaining to apes; apely.
2. Bearing resemblance to an ape.

Noun

1. An ape or monkey, especially an anthropoid.

All more precise terms are used only by specialists. So for example catarrhine refers to Old World simians, including both apes and monkeys and people who have colds, while platyrrhine, platyr(r)hinian refers to New World monkeys.

As you see, finding a monkeylike adjective (other than monkeylike itself) that excludes apes is going to be hard because what we call monkeys is actually a polyphyletic group.