Ungradable adjective

/ʌnɡɹˈeɪdəbəl ˈadʒɪktˌɪv/

/ʌnɡɹˈeɪdəbəl ˈædʒɪktˌɪv/

an adjective that does not have degrees or levels of intensity and cannot be modified by words like "very" or "extremely