What is the prefix for attractive?

There isn't a single, universally recognized prefix for "attractive." However, there are some prefixes that can be used to create words related to attractiveness, depending on the specific meaning you want to convey:

* "At-" is a prefix meaning "to" or "toward." You could use it to create words like "attractiveness," "attractable," or "attractor."

* "Beau-" is a prefix meaning "beautiful" or "handsome." You could use it to create words like "beautification" or "beautify."

* "All-" is a prefix meaning "all" or "completely." You could use it to create words like "alluring" or "all-encompassing" when describing something attractive.

Ultimately, the best prefix to use will depend on the specific context and meaning you want to express.