circumstantiator|sɜːkəmˈstænʃ(ɪ)eɪtə(r)| [f.prec.vb.: see -ator.] One who circumstantiates. 1842De Quincey Pagan Orac.Wks. VIII. 186 note, He was not the measurer of proportions in fins and beaks, but the circumstantiator of habits and variable resources.