itself

pronoun3

1. •
   [with oneself] a thing or an animal, as the one that does an action and also the same one it is done to or for

   • When the opportunity presented itself, no feasible course of action suggested itself (to us).
2. •
   it; used to intensify the subject, especially to emphasize that it is the only participant in the predicate

   • The door itself is quite heavy.
3. •
   (no longer used) it; used to refer back to an earlier subject

   • The oil by degrees gets covered with a curdy mass, which after some time settles to the bottom, while itself becomes limpid and colorless. — 1842