Researchers compared the effectivenesses of several treatment protocols to identify the best approach.

The effectiveness of the new training program became apparent after several months.

Though the plan seemed implausible at first, many believed it to be effectible with enough persistence.

The council questioned the effectibility of the proposed reforms, pondering whether such changes could realistically be achieved.

The committee evaluated the effectives before recommending a policy change.

The medieval manuscript described various magical effections that altered the course of history.

Her effectful strategy turned the failing campaign into a surprising victory.

He sent an email to the effect that the meeting would be postponed.

The research team compared the effectivities of several antiviral compounds to identify the most promising candidate.

The effection of the new design breathed life into the old building.