Based on prose, new words formed by adding one letter at the beginning or end:
a - eoprs b - operas c - pareos d - soaper e - rebops g - copers h - corpse i - dopers k - pedros l - prosed m - spored n - repose o - gropes r - ephors s - posher t - pokers u - lopers v - proles w - sloper y - splore
