diffidation
noun
dif·fi·da·tion
ˌdifəˈdāshən
plural -s
archaic
: a renunciation of faith or allegiance : formal severing of peaceful relations
Word History
Etymology
Medieval Latin diffidation-, diffidatio, from diffidatus (past participle of diffidare to renounce one's vassalage, renounce friendship, from Latin dif- —from dis-—+ fides faith) + Latin -ion-, -io -ion