oil – Ilocano, noun lana
oily
oily – Ilocano, noun nalana
old
old – Ilocano, adjective nataengaan nabayagen daan
oldtimer
oldtimer – Ilocano, noun nabayagen naisigud
ominous
ominous – Ilocano, adjective mangbutbuteng agpartaan
omit
omit – Ilocano, verb lisian ikkaten
on
on – Ilocano, preposition iti ti rabaw ti
once
once – Ilocano, adverb naminsan dagus
one
one – Ilocano, noun maysa
one sided
one sided – Ilocano, adjective maysa ti ikingna maymaysa ti kanunungan na