See more. How to pronounce inapplicability (audio) also ˌi- nə- ˌpli- kə- \ noun. As adjectives the difference between unapplicable and inapplicable is that unapplicable is not applicable while inapplicable is not applicable; incapable of being applied; not adapted; not suitable; as, the argument is inapplicable to the case. fitting, appropriate, suitable, relevant, apt, applicable, pertinent, apposite Collins Thesaurus of the English Language – Complete and Unabridged 2nd Edition. impertinent. Inapplicable: not having anything to do with the matter at hand.