D defs.my
Entry 1 sense Webster, 1913

Proviso

/prəv-īz'-ō/ · Pro·vi·so · IPA /pɹəˈvaɪzoʊ/
01 n. An article or clause in any statute, agreement, contract, grant, or other writing, by which a condition is introduced, usually beginning wi…
pl. Provisos ((#))
  1. 1.
    An article or clause in any statute, agreement, contract, grant, or other writing, by which a condition is introduced, usually beginning with the word provided; a conditional stipulation that affects an agreement, contract, law, grant, or the like; as, the contract was impaired by its proviso.
    “He doth deny his prisoners, But with proviso and exception.” Shak.