| intelligente | clever |
| intelligentemente | wisely |
| intelligenza | brilliance |
| Intelligenza ambientale | Ambient intelligence |
| intelligenza artificiale | artificial intelligence |
| Intelligenza collettiva | Collective intelligence |
| Intelligenza competitiva | Competitive intelligence |
| Intelligenza extraterrestre | Extraterrestrial intelligence |
| intellighenzia | intelligentsia |
| intelligibile | comprehensible |
| intelligibilità | intelligibility |
| Intellipedia | Intellipedia |
| Intellivision | Intellivision |
| intemperanza | intemperance |
| intempestivo | ill-timed |
| intendenza | commissariat |
| intendere | mean |
| Intendersi di | To be an old hand at |
