Aftermost

aft′ėr-mōst, adj. hindmost. [A.S. æftemest ; Goth. af-tum a , -tum a , being equiv. to L. -tum us in op-tum us , best. Goth. has also af-tum-ists = A.S. æf-tem-est , which is thus a double superlative.—Thus in aftermost, r is intrusive and -most is not the adv. most .]