7 letter words:
affixer20,
reaffix20,
5 letter words:
affix18,
fixer15,
refix15,
fifer11,
afire8,
feria8,
4 letter words:
fief10,
fife10,
raff10,
riff10,
fair7,
fare7,
fear7,
fiar7,
fire7,
frae7,
reif7,
rife7,
3 letter words:
fax13,
fix13,
axe10,
rax10,
rex10,
aff9,
eff9,
iff9,
arf6,
far6,
fer6,
fie6,
fir6,
ref6,
rif6,
air3,
are3,
ear3,
era3,
ire3,
rai3,
rei3,
ria3,
2 letter words:
ax9,
ex9,
xi9,
ef5,
fa5,
fe5,
if5,
ae2,
ai2,
ar2,
er2,
re2,