Wiktionary
vb. (context archaic English) Second-person singular present simple form of '''ought'''
Usage examples of "oughtest".
Therefore thou oughtest to cast away all things which hinder grace, if thou longest to receive the inpouring thereof.
Know thou of a surety that thou oughtest to lead the life of a dying man.
If thou settest thyself to that thou oughtest, namely, to suffer and to die, it shall soon go better with thee, and thou shalt find peace.
Thou oughtest surely to suffer a little for Christ when many suffer heavier things for the world.
And if it were thine to choose, thou oughtest rather to wish to suffer adversities for Christ, than to be refreshed with manifold consolations, for thou wouldest be more like Christ and more conformed to all saints.
Thou oughtest to be separated from thy acquaintances and dear friends, and keep thy mind free from all worldly comfort.
That oughtest thou to know and no man better, said the good man, for thou knewest the daughter of King Pelles fleshly, and on her thou begattest Galahad, and that was he that at the feast of Pentecost sat in the Siege Perilous.
And anon a voice said to him: Flee, Launcelot, and enter not, for thou oughtest not to do it.
If, then, thou dost not justly pity the wicked, thou oughtest not to pity them.
If thou seest thyself fallen once and a thousand times, thou oughtest to make use of the remedy which I have given thee, that is, a loving confidence in the divine mercy.
This is the means thou oughtest to use—not to lose time, not to disturb thyself, and reap no good.
Rather oughtest thou to be provoked to higher aims, and at the least to long after the desire thereof.
But thou oughtest not only to prepare thyself for devotion before Communion, thou must also keep thyself with all diligence therein after receiving the Sacrament.
Thou oughtest not to judge according to present feeling, nor so to take or give way to any grief which befalleth thee, as if all hope of escape were taken away.
Chiefly oughtest thou to humble thyself when thou feelest inwardly little or no devotion, yet not to be too much cast down, nor to grieve out of measure.