investiguer
→ to investigate
investir
→ to invest
inviter
→ to invite, to think up
invoquer
→ to invoke, to appeal to
ioder
→ to iodize
ioniser
→ to ionize
ironiser
→ to be ironic
irradier
→ to irradiate
irriguer
→ to irrigate, to water
irriter
→ to irritate, to arouse, to excite, to incite, to provoke, to rouse, to stimulate, to stir up