ensureth

Verb

ensure (third-person singular simple present ensures, present participle ensuring, simple past and past participle ensured)

1. (intransitive) To make sure or certain of something (usually some future event or condition).
   • I use an alarm clock to ensure that I get up on time.
2. (obsolete, transitive) To make a pledge to (someone); to promise, guarantee (someone of something); to assure.
   • Thenne he cryed hym mercy and sayd Faire knyght for goddes loue slee me not / and I shall ensure the neuer werre ageynst thy lady / but be alwey toward her / Thenne Bors lete hym be1485, Sir Thomas Malory, “xvj”, in Le Morte Darthur, book XVI