proviso
noun
[ prəˈvʌɪzəʊ ]
• a condition or qualification attached to an agreement or statement.
• "he let his house with the proviso that his own staff should remain to run it"
Similar:
condition,
stipulation,
provision,
clause,
rider,
qualification,
restriction,
reservation,
caveat,
limitation,
strings,
Origin:
late Middle English: from the medieval Latin phrase proviso (quod) ‘it being provided (that)’, from Latin providere ‘foresee, provide’.