non résiliable

OBS: Se dit d'un contrat, par exemple un bail, qui ne peut être résilié par l'une ou l'autre des parties au contrat.

CONT: Policies which may not be ... cancelled are ""non-cancellable"".
OBS: cancel(l)ed. Because the primary accent falls on the first syllable, in AmE the -l- should not be doubled in the second syllable. The -ll- spelling often mistakenly crops up in American writing.
OBS: Doubling of final consonants. Unaccented syllables in inflected words are sometimes spelled differently in AmE and in BrE. Americans generally do not double a final -l- before the inflectional suffix, whereas the British generally do.