... disinfectant infectiousinflation inflatable, inflated, inflationaryinformant, information, informer informative, uninformative, informed,uninformedinjury injured, uninjuredinnocence innocentinsistence ... followingforceforest, deforestation, forestryforgetfulnessforgiveness form, formation, transformation,reformer, transformerformalityfortunefreebie, freedomfreeze, freezer, freezingfrequency, ... wooded, wooden, woodywool, woollens, woolliness woollen/US woolen, woolly/USwooly word, wording wordy, worded, wordlesswork, workaholic, worker, workings, workable, unworkable, overworked,workout...