ὑπισχνέομαι 1 2 3 4 5 a collat. form of ὑπέχομαι
1.3 sg. plup. ὑπέσχητο: — to promise or engage to do a thing, Il., attic;—in attic also, sometimes, to take upon oneself, i. e. to undertake to do, to promise a thing, c. acc., Hom.; with inf. aor., Xen.
2.absol. to promise, make promises, Hdt.
3.with inf. pres. to profess that one is, profess to be, id=Hdt., Plat.: also to profess to do a thing, Plat., Xen.