1. scrupus — de Vaan
scrupus 'sharp stone' [m. o] (Cic.+) Derivatives: scrupeus [adj. / f ] 'of sharp rocks; obstacle' (Ena+), scriiposus 'full of sharp rocks' (PL+)> scrupulvs 'worry, precaution' (Ter.+), scrupulosus *jagged; scruta minutely careful' (Varro+); scnp(t)ulum 'certain small unit of measurement' (Varro+). It is assumed that scrip(t)ulum got its -i- (and sometimes -t-) under the influence of scnptum. No etymology. BibL: WH … — [de Vaan, s.v. scrupus, p. 561]