use '?' for JOKER (blank)

From letters F, I, N, G, E, R, P, R, I, N, T, I, N, G, S  I made following words

15 letter words

fingerprintings[22]

14 letter words

fingerprinting[21]

12 letter words

fingerprints[18]

11 letter words

fingerprint[17], respringing[15], reinspiring[14], innerspring[14], restringing[13]

10 letter words

fingertips[16], presifting[16], infringing[15], fingerings[15], springeing[14], infringers[14], prerinsing[13], reprinting[13], nitrifiers[13], reigniting[12]

9 letter words

prefiring[15], fingertip[15], fingering[14], inferring[13], infringer[13], nigrifies[13], signifier[13], infringes[13], springing[13], spriggier[13], infesting[13], fringiest[13], resifting[13], repinning[12], inspiring[12], reprising[12], respiring[12], springier[12], nitrifier[12], infinites[12], nitrifies[12], priesting[12], respiting[12], spiriting[12], printings[12], sprinting[12], ferritins[12], resigning[11], ingesting[11], signeting[11], stringing[11], interning[10], interring[10], inserting[10], sintering[10], stringier[10]

8 letter words

pfennigs[14], feigning[13], fringing[13], grifting[13], spitfire[13], infringe[12], refining[12], fringier[12], refiring[12], ignifies[12], sprigger[12], feinting[12], piggiest[12], grifters[12], repining[11], ripening[11], spinning[11], speiring[11], spiering[11], respring[11], springer[11], infinite[11], printing[11], ferritin[11], finniest[11], ferninst[11], gripiest[11], spirting[11], striping[11], firriest[11], engining[10], reigning[10], grinning[10], singeing[10], ginnings[10], ninepins[10], inspirer[10], tingeing[10], igniting[10], stinging[10], ringgits[10], pristine[10], inspirit[10], triggers[10], stripier[10], printers[10], reprints[10], sprinter[10], resining[9], rerising[9], grinners[9], retiring[9], ginniest[9], igniters[9], resiting[9], stingier[9], restring[9], stringer[9], stirring[9]

7 letter words

pfennig[13], gifting[12], finning[11], pinging[11], piggier[11], griping[11], finings[11], piggies[11], piggins[11], fingers[11], fringes[11], firings[11], rifting[11], grifter[11], fisting[11], sifting[11], peining[10], penning[10], pinning[10], finnier[10], gripier[10], peising[10], sniping[10], pingers[10], springe[10], prising[10], spiring[10], gripers[10], niftier[10], finites[10], nifties[10], spiting[10], ginning[9], ninepin[9], girning[9], ringing[9], ripieni[9], sieging[9], ginseng[9], signing[9], singing[9], pinnies[9], gingers[9], niggers[9], serging[9], snigger[9], inspire[9], spinier[9], pinners[9], spinner[9], riggers[9], grigris[9], spirier[9], tinging[9], girting[9], ringgit[9], trigger[9], printer[9], reprint[9], piniest[9], pinites[9], tiepins[9], ginnier[8], reining[8], rinning[8], grinner[8], insigne[8], seining[8], innings[8], sinning[8], irising[8], ginners[8], rinsing[8], ringers[8], tinning[8], igniter[8], tiering[8], renting[8], ringent[8], trining[8], ignites[8], nesting[8], tensing[8], ninnies[7], rennins[7], tinnier[7], intines[7]