"Isu" is a word in ILOKANO

pron. he, she; him, her: the person previously mentioned. ISU is the full nominative case form, ISU or zero (nothing) the enclitic nominative, KUKUANA the full possessive, NA the enclitic possessive and the agent, and KANYANA or KENKUANA the oblique. --var. ISUNA

pron. it, that. No isu ti kayat ti dios, awan ti maaramid tayo. If it is the will of God, we can’t do anything.

v. /-UM-/ to be enough or sufficient, to fit.

adv. an emphatic particle; it is followed by NGA before a clause. Isu dayta ti paggapoan ti kirokiro ita. It is that from which problems come. Isu nga addaak ditoy ta kayat ka nga makita. That I am here is because I want to see you. --var. ISUNA.