English dictionary
thyself
/D//aI/'s/E/lf/
Definitions, examples, synonyms and antonyms from WordNet 3.0.
pronoun
-
An emphasized form of the personal pronoun of the second person; -- used as a subject commonly with <i>thou</i>; as, thou <i>thyself</i> shalt go; that is, thou shalt go, and no other. It is sometimes used, especially in the predicate, without <i>thou</i>, and in the nominative as well as in the objective case.
Source: webster1913