约定性

[ noun ]
a temperamental disposition to be agreeable
<noun.attribute>

Agreeability \A*gree`a*bil"i*ty\, n. [OF. agreablete.]
1. Easiness of disposition. [Obs.] --Chaucer.

2. The quality of being, or making one's self, agreeable;
agreeableness. --Thackeray.