An operative person or thing.
Any of a class of behaviors that produce consequences by operating (i.e., acting) upon the environment.
That operates to produce an effect.
Somebody or something that meets requirements without exceeding them.
The rating given to somebody or something that meets requirements without exceeding them.
Causing satisfaction; agreeable or pleasant; satisfying.
Done to satisfaction; adequate or sufficient.
Making atonement for a sin; expiatory.