When it comes to describing someone as "quite decent-looking," there are plenty of synonyms that can be used to convey a similar meaning. Some alternatives to consider include "fairly attractive," "reasonably good-looking," "pleasantly presentable," "moderately handsome," "rather nice-looking," "somewhat appealing," "pretty decent-looking," "relatively attractive," "reasonably pleasant-looking," "adequately good-looking," and "modestly attractive." Each of these phrases can offer a slightly different nuance or connotation, so it's important to choose the word or phrase that feels most fitting for the specific context and individual being described.