Wilmot, for one

• Rider favouring protection for face when cut
• A stipulated condition
• Stipulated condition
• Attached condition
• Conditional clause

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Proviso \Pro*vi"so\, n.; pl. Provisos . [L., (it) being provided, abl. of provisus, p. p. of providere. See Provide , and cf. Purview .] An article or clause in any statute, agreement, contract, grant, or other writing, by which a condition is introduced, ...

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
mid-15c., from Medieval Latin proviso (quod) "provided (that)," phrase at the beginning of clauses in legal documents (mid-14c.), from Latin proviso "it being provided," ablative neuter of provisus , past participle of providere (see provide ). Related: ...

Wikipedia Word definitions in Wikipedia