There are no English words that end with the letters "kn."
Here are the five-letter words that BEGIN with "kn."
knack, knaps, knars, knaur, knave, knead, kneed, kneel, knees, knell, knelt, knife, knish, knits, knobs, knock, knoll, knops, knosp, knots, knout, known, knows, knurl, knurs
which
bayou
Forum
five (5) letter word ends with Q: tranq. umiaq. qepiq.
adieu, bayou
Shout, about, grout.
Flyer.
hello :)
Stage
phone
width
arena