pron.
1. a emphat. form of HE or HIM (he himself will do it). b refl. form of HIM (he has hurt himself).
2 in his normal state of body or mind (does not feel quite himself today).
3 esp. Ir. a third party of some importance; the master of the house.
Phrases and idioms:
be himself act in his normal unconstrained manner. by himself see by oneself.
Etymology: OE (as HIM, SELF)