Answer:
Knight
knicknack
knickerbockers
kill
knife
Kentucky
Kansas
khaki
kite
keys
keep
KFC
kitten
karate
kookoolachoo
kiss
kool-aid
kumquats
kiwi
knit
kit
knot
kate
kitten
kite
kangaroo
kilometer
kick
kelp
kale
keeper
keep
killer
killing
knots
kits
kittens
kangaroos
kicking
kicks
krill
knights
There are lots of words that begin with a "K". Here are some examples:
King
Kaleidoscope
Kipper
Kilt
Kill
Keys
Keg
Kid
Kick
Kiss
Kissed
Kind
kill
killer
kicked
kidney
karate kid
karate
kindness
kindfully
kindful
kicks
key
knight
kings
kites
kite
kit
kits
killers
knickers
by sumiya1(all bold ones)
a word is know
Some words that start with the letter k are
kept
keep
keeper
kangaroo
karaoke
karma
kick
kickoff
kid
kidnap
key keystone
keyword
keyboard
kill
kind
kindness
kindly
king
kingdom
kiss
knight
knit
kitten
knot
known
knowledge
know