- knife pleat
- knife rest
- knife switch
- knife-edged
- knife-point
- knifeman
- knifepoint
- kniferest
- knight
- knight bachelor
- knight banneret
- knight errant
- knight errantry
- knight in shining armor
- knight marshal
- knight of the road
- knight-errant
- knight-errantry
- knighthead
- knighthood
- knightly
- kniphofia
- knish
- knit
- knitted
- knitting
- knitting needle
- knitwear
- knives
- knob
- knob latch
- knob lock
- knobble
- knobbling roll
- knobby
- knobcone pine
- knobhead
- knobkerrie
- knock
- knock about
- knock back
- knock cold
- knock dead
- knock down
- knock down with a feather
- knock for a loop
- knock into a cocked hat
- knock it off
- knock off
- knock on wood
- knock oneself out
- knock out
- knock over
- knock over with a feather
- knock rummy
- knock someone's block off
- knock someone's socks off
- knock the bottom out of
- knock the living daylights out of
- knock the socks off
- knock together
- knock up
- knock-down-drag-out
- knock-for-knock
- knock-knee
- knock-on
- knock-on effect
- knockabout
- knockdown
- knocked-down
- knocker
- knocking copy
- knocking-shop
- knockoff
- knockout
- knockout drops
- knockwurst
- knoll
- knop
- knosp
- knot
- knot garden
- knot stitch
- knotgrass
- knothole
- knotroot
- knotted
- knotter
- knotting
- knotty
- knotweed
- knotwork
- knout
- know
- know a thing or two
- know all the answers
- know beans
- know better
- know by heart
- know by sight
- know enough to come in out of the rain
- know from Adam
- know if one is coming or going
- know it all
- know like a book
- know one's own mind
- know one's place
- know one's stuff
- know one's way around
- know only too well
- know the ropes
- know the score
- know where one stands
- know which side of one's bread is buttered
- know-all
- know-how
- know-it-all
- know-nothing
- knowable
- knowe
- knowed
- knowing
- knowledge
- knowledge economy
- knowledge engineering
- knowledge worker
- knowledge-based system
- knowledgeable
- known
- known quantity
- knub
- knubbly
- knubby
- knuck
- knuckle
- knuckle down
- knuckle joint
- knuckle sandwich
- knuckle under
- knuckle-duster
- knuckleball
- knuckleballer
- knucklebone
- knucklebones
- knucklehead
- knulling
- knur
- knurl
- knurled
- knurling
- knurly
- knäckebröd
- koa
- koala
- koan
- koap
- kob
- kobo
- kobold
- kochia
- koekoea
- koeksister
- koel
- kof
- kofta
- koftgar
- kogal
- koha
- kohanga reo
- kohekohe
- kohl
- kohlrabi
- kohutuhutu
- koi
- koilonychia
- koine
- koji
- kok-saghyz
- kokako
- kokanee
- kokiri
- koko
- kokobeh
- kokopu
- kokowai
- koku
- kola
- kola nut
- kolacky
- kolinsky
- kolkhoz
- kolo
- koloa
- komatik
- kombu
- kombucha
- komondor
- kompromat
- kona
- kona cyclone
- konak
- konbu
- konditorei
- kondo
- koneke
- kongoni
- konimeter
- konini
- koniology
- kontakion
- koodoo
- kook
- kookaburra
- kooky
- koori
- kootchar
- kop
- kop.
- kopeck
- kopfring
- koph
- kopiyka
- kopje
- koppa
- kor
- kora
- koradji
- korari
- kore
- korero
- korfball
- korimako
- korma
- koro
- koromiko
- korona
- korora
- korowai
- koru
- koruna
- kos
- kosha
- kosher
- kosher pickle
- kosher salt
- kosher-style
- kotahitanga
- kotare
- kotch
- koto
- kotuku
- kotukutuku
- kotwal
- kotwali
- koulibiaca
- koumis
- kouprey
- koura
- kouros
- kowhai
- kowhaiwhai
- kowtow
- kp
- kpc
- kph
- kr
- kr.
- kraal
- kraft
- krait
- kraken
- krakowiak
- krameria
- kran
- krans
- krater
- kratom
- kraurosis
- kraut
- kremlin
- kreplach
- kretek
- kreutzer
- krewe
- kriegie
- kriegspiel
- krill
- krimmer
- kris
- kromesky
- krona
- krone
- kroon
- krs
- kruller
- krumkake
- krummholz
- krummhorn
- krumping
- kryo-