Thȳ-self', pron.

An emphasized form of the personal pronoun of the second person;—used as a subject with thou, to express distinction with emphasis: as, thou thyself shalt go; that is, thou shalt go, and no other. It is sometimes used, especially in the predicate, without thou, and in the nominative as well as objective case. “I to thee, thou to thyself, most cruel.” Milton.