ask
ark
auk
elk
ink
oak
yak
amok
Talk
Knock, knack
Five letter words that end in K are:blackblockbreakbrookchalkcheckchinkchuckchunkclickclockcluckclunkcrankcreekcroakcrookdrankdrinkdrunkflackflankflaskfleckflickflockflunkfrankfreakfriskfrockGreekkayakkioskknackknockquackquarkquickquirkshackshanksharksheikshirkshockshookshuckskulkskunkslacksleekslickslunksmacksmirksmocksnacksneakspanksparkspeakspeckspookspunkstackstalkstunkstarksteakstickstinkstockstorkstuckswank
craftwork
firetruck
Kinetic and kleptomaniac begin with the letter k. They end with the letter c.
knapsacks
backpack
outbreak
its king!
yacketyyak