I. -tə̇vlē, -li adverb
Etymology: Middle English, from effective + -ly
: in an effective manner : with great effect
he knows how to communicate his ideas effectively
also : completely
rain … blotting out the landscape as effectively as a fog would do — C.S.Forester
II. adverb
: in effect : virtually
the civil war effectively partitioned Lebanon — J.M.Markham