(second person, the plural of thyself, the reflexive case of you)
- (pseudo-archaic, nonstandard) Yourselves: a plural of the normally archaic pronoun thyself.
- When the pronoun thou was in common use, it was specifically singular (often specifically informal). However, in current use, where thou survives as an archaism, this distinction is not actively maintained, and many speakers treat thou simply as an archaic synonym of you, enabling thyselves to be coined as a pseudo-archaic synonym of yourselves.
From thyself, apparently by analogy with yourselves.