tantisper adv. tantus+-per, for so long a time, in the meantime, meanwhile: de aliquo reo cogitasse: tantisper impedior: tantisper tutelā muliebri res Latina puero stetit, L.
—Followed by dum, all the time, for so long: tantisper volo, Dum facies, T.: ut ibi esset tantisper, dum culeus compararetur.