estuation UK /ˌɛstjʊˈeɪ̯.ʃən/US /ˌɛst͡ʃuˈeɪ̯.ʃən/ noun1 •(no longer used) An agitation or commotion.So is it with men in ambition, when fayling of the meane to exalt their Nature, they are in a perpetuall estuation to exalte theyr Place. — 1605 formsestuations