- Conventional by Webster's
(a.) Growing out of or depending on, custom or tacit agreement; sanctioned by general concurrence...
- convention by WordNet
nounA large formal assembly. usage: "political convention"Something regarded as a...
- protocol by Jared Aguilar
the formal etiquette and code of behaviour, precedence, and procedure for state and diplomatic...
- Concurrence by Webster's
(n.) Agreement or consent, implying aid or contribution of power or influence; cooperation.(n.) A...
- treaty by Ella Willis
a. a formal agreement or contract between two or more states, such as an alliance or trade...