Emphatic sg. second person pron. used in appositive constructions: thyself, yourself: (a) as appositive to the subj. of a clause; ?also, for yourself [quot. c1450(?a1400)]; (b) as appositive to the unexpressed subj. of a verb in the impv. [could also be construed as sense 3.(a)].

Emphatic sg. second person pron. having the same referent as the subj.: thyself, yourself: (a) as reflexive obj. of a verb, an inf., or a ppl.;—sometimes with obj. compl. following; also in as constructions [quots. 1340 & a1425]; (b) as obj. of a prep.; for ~, for thy sake; oute of ~, mad, insane [quot. a1300]; also, beyond your bodily existence [quot. 1340].

Emphatic sg. second person pron. used independently: (a) as subj., or part of the subj., of a clause: thou thyself, you yourself, you; also used as pred. nom., as appositive to subj. [quot. a1500(1413)], and in than constructions; (b) as direct obj., or part of the direct obj., of a verb: thyself, yourself, you;—also in impers. construction [1st quot.]; leiken ~, to amuse yourself (with sth.); (c) as obj. of a prep.: thyself, yourself, you.