| insaisissable | elusive |
| insalubre | insalubrious |
| insanité | madness |
| Insar | Insar |
| insatiable | insatiable |
| insatisfaction | unhappiness |
| insatisfaisant | unsatisfactory |
| insatisfaisante | unsatisfying |
| insatisfait | disgruntled |
| insaturé | unsaturated |
| inscription | registration |
| Inscription de Behistun | Behistun Inscription |
| inscrire | take down |
| inscrire leur nom en entrant | sign in |
| inscrire leur nom en sortant | sign out |
| Inscrire sur | To superscribe |
| inscrire sur la liste noire | blacklist |
| inscrire sur le livre de comptes | enter |
| inscrit | enrolled |
| Insecta | Insect |
| Insectarium de Montréal | Montreal Insectarium |
| insecte | insect |
| insecte nuisible | pest |
| Insectes | Insect |
| insecticide | insecticide |
| Insectifuge | Insect-repellent |
| Insectivora | Insectivora |
| insectivore | insectivorous |
| insectivores | insectivore |
| insectologie | entomology |
| Insei | Cloistered rule |
| Inseminoid | Inseminoid |
| insensibiliser | put out |
| insensibilité | frigidity |
| insensibilité congénitale à la douleur | congenital insensitivity to pain |
| insensible | numb |
| insensé | stupid |
| insertion | insertion |
| Insheim | Insheim |
| Inside Deep Throat | Inside Deep Throat |
| insidieux | tricky |
| insigne | badge |
| insigne de pilote | wings |
| insignes | insignia |
| insignes royaux | regalia |
| insignifiance | pettiness |
| insignifiant | footling |
| insincérité | insincerity |
| Insingen | Insingen |
| insinuant | niggling |
| insinuation | implication |
| insinuer | insinuate |
| insipide | flavorless |
| insipidité | insipidity |
| insistance | stress |
| insistant | fixed |
| insister | press |
| insister sur | hammer away at |
| Insister sur qc | Stress |
| Insister sur un point | Press a point |
| insolation | sunstroke |
| insolence | offense |
| insolent | audacious |
| insolite | bizarre |
| insolubilité | intractability |
