Striater is a word that means "to mark with stripes." If you're looking for alternative words, there are many synonyms that you can use, depending on the context in which you need to describe the action. For example, you might use the word patterned to describe something that has stripes or other decorative markings. Similarly, you could use the word adorned to describe something that has been decorated with stripes or other patterns. Other potential synonyms for striater might include embellish, decorate, or mark. No matter which word you choose, the goal is to describe an object or surface that has been enhanced or adorned in some way.