Based on sirree, new words formed by adding one letter at the beginning or end:
a - reraise b - berries d - derries desirer redries resider serried f - ferries refires refries h - herries rehires j - jerries k - kerries l - reliers n - rerisen p - perries prisere reprise respire t - retires retries terries v - reivers reviser rievers w - rewires