(a.) Precisely the same; the very same; identical.

Doppelganger actual thing alike all one all the same carbon copy consubstantial copy dead ringer ditto double duplicate equivalent exact exact counterpart exactly alike facsimile homograph homonym homoousian homophone idem identic identical identical same indistinguishable just alike like no other none other one replica same spit and image spitting image synonym the same the same difference twin undifferent very very image very same without difference without distinction