U / ūnetvīcēsĭmus
adjective

ūnetvīcēsĭmus

fem. ūnetvīcēsĭma · neut. ūnetvīcēsĭmum
(), , unus-et-vicesimus
the twentyfirst
the twentyfirst: legio, Tac. A. 1, 45 (al. undevicesimus).