15-Letter Words Containing: B,R,E,N,N,E

• the posterior portion of the brain including cerebellum and brainstem

• in an interchangeable manner

• a long-acting barbiturate used as a sedative

• (mathematics, logic) such that the arguments or roles can be interchanged

• capable of replacing or changing places with something else; permitting mutual substitution without loss of function or suitability

• impossible to measure or compare in value or size or excellence

• not having a common factor