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non-excusable
non-excusable adj. 
/ˌnɒnɛkˈskjuːzəbl/, /ˌnɑnɛkˈskjuzəb(ə)l/ rare
Brit. /ˌnɒnᵻkˈskjuːzəbl/
, /ˌnɒnᵻkˈskjuːzəbl//ˌnɒnɛkˈskjuːzəbl/U.S. /ˌnɑnᵻkˈskjuzəb(ə)l/
, /ˌnɑnᵻkˈskjuzəb(ə)l//ˌnɑnɛkˈskjuzəb(ə)l/ΚΠ
1888 in Clarendon's Hist. Rebellion (new ed.) IV. x. 267 The not having a ship ready, if it were intended, was non-excusable [1704 unexcusable].
1997 Amer. Jrnl. Internat. Law 91 131 Does paragraph 2E imply a non liquet, i.e., a nonexcusable failure to render judgment?
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