Yrast states in the neutron-rich 33 14 Si 19 nucleus have been studied using binary grazing reactions produced by the interaction of a 215-MeV beam of 36 S ions with a thin 208 Pb target. An experimental setup that combines the large-acceptance magnetic spectrometer PRISMA and the high-efficiency γ -ray detection array CLARA was used in the experiment. Four new γ -ray photopeaks at energies of 971, 1724, 1772, and 2655 keV were observed and assigned to the 33 Si level scheme. The experimental level scheme is compared with the results of 1hω p-sd-pf large-scale shell-model calculations using the recently developed PSDPFB effective interaction; good agreement is obtained. The structure of the populated states of 33 Si is discussed within the context of an odd neutron coupled to states of the 32 Si core.