Instinet rhymes with:
robinette, allnet, arpanet, avnet, bayonet, bissonnette, cellnet, dragnet, driftnet, ethernet, filenet, imnet, internet, investnet, massenet, raynet, robinette, rudnet, sassnet, selectnet, seniornet, spacenet, telenet, tymnet, usenet
Instinet sounds like:
incident, incitement, insistent, instant, instantiate, instantiated