Moving in two directions alternately, vibrating to and fro, fluctuating, wavering · Vacillating in mind, wavering, uncertain, doubting, doubtful, dubious, irresolute, undetermined · Precarious, dangerous, critical, difficult, adverse, doubtful, in doubt
zıt: fixus, prōmptus, indubius
köken: Somewhat uncertain, but likely derived from *dubos (“in doubt”, adj.), from Proto-Italic *du(i)βwos, from Proto-Indo-European *dwi- (“two-”) + *bʰuH- (“to be”), with the same latter element as in superbus, probus (less likely tribus), in this case parallel to Ancient Greek διφυής (diphuḗs, “of two shapes or natures”). Or less likely, directly from Proto-Indo-European *dubʰi- (“on two sides”). For…