- The definition of a proviso is a condition attached to an agreement.
An example of a proviso is if you will sign on a contract to sell your company only on the condition that you get to be on the board.
nounpl. pro·vi·sos or pro·vi·soes
A clause in a document imposing a qualification, condition, or restriction.
Origin of provisoMiddle English, from Medieval Latin prōvīsō (quod), provided (that), from Latin prōvīsō, ablative of prōvīsus, past participle of prōvidēre, to provide; see provide.
proviso - Legal Definition
A condition or limitation that may determine the applicability of a document to certain conditions or persons.