[in.ex.cus.able] adj [ME, fr. L inexcusabilis, fr. in- + excusabilis excusable] (15c): being without excuse or justification -- in.ex.cus.able.ness n -- in.ex.cus.ably adv
INEXCUSABLE
Meaning of INEXCUSABLE in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012