Nerf
Jumble Word #16

Well done everyone.Here is the answer, using the International dictionary. There is 125 words in total without using the "I" rule.
4-letter words
eine, feni, fier, fine, fire, firn, frit, neif, nief, nife, nite, reif, rein, rife, rift, rine, rite, tier, tine, tire, tirr, trie, trin
5-letter words
eerie, feint, fient, fiere, finer, firer, freit, frier, inert, infer, inter, niter, nitre, refit, retie, rifer, rifte, treif, trier, trine
6-letter words
eerier, enfire, entire, etrier, feerie, feerin, ferine, fineer, infere, nerite, refine, refire, reiter, retine, retire, triene
7-letter words
feinter, fernier, ferrite, inerter, reefier, refiner, reinter, rentier, retiree, teenier, terrine
8-letter words
freetier
9-letter words
interfere
frere (if French words count)