Mammoth Uncensored Word List:
34 words ending with nt, 16 letters long

antiunemployment chemiluminescent chemoluminescent cholinedependent countercomplaint counterinsurgent disestablishment disfranchisement embourgeoisement hyperdevelopment hyperintelligent malapportionment microenvironment nondisparagement nonentertainment nonestablishment nonreappointment nonreimbursement nonreinforcement nonreinstatement paleoenvironment photoluminescent piezoluminescent radioluminescent radiotransparent superintelligent triboluminescent ultraconcomitant unacknowledgment underachievement underdevelopment undernourishment underreplacement weatherresistant