Proviso is a noun that refers to a condition attached to an agreement.

The Latin word providere (pro vee DARE ay) means ‘to foresee or provide.’ Our word of the day came about in the late Middle English period as part of the phrase ‘it being provided that.’ Centuries later, proviso is used in a more informal manner. Here’s an example:

I went to the bowling match between my co-workers, but only with the proviso that I could bring my ear buds with me. Let’s just say bowling isn’t exactly a thrill a minute.