| 1. | Grammar. an affix placed before a base or another prefix, as un- in unkind, un- and re- in unrewarding. |
| 2. | something prefixed, as a title before a person's name. |
| 3. | to fix or put before or in front: to prefix an impressive title to one's name. |
| 4. | Grammar. to add as a prefix. |
| 5. | to fix, settle, or appoint beforehand. |
Letters placed in front of a word to form a new word: “trimonthly,” “semimonthly,” “bilingual,” “multilingual,” “address,” “redress,” “predate,” “postdate.” (Compare suffix.)