iubeo — de Vaan
iubeo 'to order' [v. II; pf. iussi, ppp. iussum; SCBac. ioub-, ious-] (Andr.+) Derivatives: iussus, -Us 'bidding, command' (P1.+), iniussu [adv.] 'without orders' (Cato+). Pit. *joup-eje/o-. PIE *Hioudh-eie/o- 'to cause to move'. IE cognates: Skt. pr. yudhya- 'to fight', — [de Vaan, s.v. iubeo, p. 326]