Correct spelling for the English word "Insanability" is [ɪnsˌe͡ɪnəbˈɪlɪti], [ɪnsˌeɪnəbˈɪlɪti], [ɪ_n_s_ˌeɪ_n_ə_b_ˈɪ_l_ɪ_t_i] (IPA phonetic alphabet).
The word "insanability" does not have widely recognized origins or an established etymology. This term is a combination of "insane" (referring to mental illness or irrational behavior) and the suffix "-ability" (denoting the state or quality of being able to). It seems to be a neologism, meaning it is a newly coined word or a combination of existing words to express a unique concept. However, it is not a commonly used or recognized term in the English language.