There is 1 11-letter word that end with 'b'.
thingamabob | ||
Note: These 1 11-letter words that end with 'b' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words end with mb, ab, rb, ub, ob, ib, eb, bb, lb.
2-letter words end with 'b' (1)