What is another word for "caveat"?

Roget's Thesaurus (1911) lists these synonyms for "caveat": agent, agree, agreement, always, and, attest, bargain, barter, bond, bribe, bribery, buy, buyer, candle, cartel, charter, clench, client, clientele, close, coemption, come, compact, complete, completion, compromise, conclude, concordat, confirm, contract, convention, conventional, counter, covenant, customer, deal, diplomacy, employer, emption, endorse.