involucrar - to involve, to get involved
inyectar - to inject
ironizar - to ridiculize, to treat ironically
irradiar - to irradiate, to radiate
irritar - to irritate, to become exaspered
irrigar - to irrigate
italianizar - to italianize
implantar - to implant, to introduce
implementar - to implement
impregnar - to impregnate