Definition of accountment in English:

accountment

noun

rare
  • The process or work of accounting or reckoning for something; responsibility. Also: the manner in which something is accounted for; an instance of accounting.

Origin

Mid 19th century; earliest use found in Charles Heavysege (1816–1876). From account + -ment.

Pronunciation:

accountment

/əˈkaʊntm(ə)nt/