Mammoth Uncensored Word List:
24 words ending with ht, 12 letters long

aforethought afterthought bantamweight counterlight featherlight interwrought merrythought middleweight nonovernight overschutcht overstraight pillowfought ploughwright postmidnight quarterlight screenwright seventyeight stockpunisht summerweight underwrought weathertight welterweight williewaught winterweight