Apish and Simian

Apish adjective - Using or marked by the use of something else as a basis or model.

Simian and apish are semantically related. In some cases you can use "Simian" instead the word "Apish" as a noun or an adjective.

Simian adjective - Relating to or resembling an ape.

Apish and simian are semantically related. You can use "Apish" instead an adjective "Simian".