- clamour
- clamp
- clampdown
- clamp down
- clamp down on
- clamper
- clamshell
- clamshell door
- clam up
- clamworm
- clan
- Clancy
- clandestine
- clang
- clang association
- clanger
- clanging
- clangor
- clangour
- clank
- clanker
- clannish
- clansman
- clanswoman
- clap
- clapback
- clapboard
- clap eyes on
- Clapham Sect
- clap-net
- clapometer
- clap on
- clapped out
- clapped-out
- clapper
- clapperboard
- clapper bridge
- clapperclaw
- clapper rail
- clappy-doo
- clap skate
- clapt
- Clapton
- claptrap
- claque
- claqueur
- clar.
- Clara
- clarabella
- Clarabelle
- clarain
- Clare
- Claremont
- Claremore
- clarence
- Clarence
- Clarenceux
- clarendon
- Clarendon
- Clarendon Code
- clare-obscure
- Clare of Assisi
- Clare of Assisi, Saint
- claret
- claret cup
- Claretian
- Claribel
- Clarice
- clarificant
- clarification
- clarify
- Clarinda
- clarinet
- clarinetist
- clarino
- clarion
- Clarissa
- clarity
- Clark
- Clark's nutcracker
- Clark cell
- Clarke
- Clarke's gazelle
- clarkia
- Clarksburg
- Clarksdale
- Clarkson
- Clarksville
- claro
- clarsach
- clarthead
- clarts
- clarty
- clary
- clash
- Clashing Rocks
- clasp
- clasper
- claspers
- clasping
- clasp knife
- class
- class.
- class-A amplifier
- class act
- class action
- class action law suit
- class A drug
- class-B amplifier
- class B drug
- classbook
- class-C amplifier
- class C drug
- class conflict
- class-conscious
- class consciousness
- class day
- classic
- classical
- classical antiquity
- Classical Armenian
- Classical Chinese
- classical college
- classical conditioning
- classical economics
- Classical Greek
- Classical Latin
- classical mechanics
- classical music
- classical mythology
- classical pathway
- classical physics
- classical probability
- classical Sanskrit
- Classical school
- classic blues
- classic car
- classicism
- classicist
- classicize
- classics
- classification
- classification schedule
- classified
- classified ad
- classified advertising
- classifier
- classify
- class inclusion
- class interval
- classis
- classism
- classless
- class list
- class mark
- classmate
- class meaning
- classon
- classroom
- classroom assistant
- class structure
- class struggle
- classwork
- classy
- clast
- clastic
- clat
- clathrate
- clathrin
- clatter
- claucht
- Claude
- Claudel
- Claude Lorrain
- Claudette
- Claudia
- claudication
- Claudine
- Claudius
- Claudius I
- Claudius II
- claught
- clause
- Clausewitz
- Clausius
- Clausius cycle
- clausthalite
- claustral
- claustrophobe
- claustrophobia
- claustrophobic
- claustrum
- clausula
- clava
- clavacin
- clavate
- clave
- claver
- clavicembalo
- clavichord
- clavicle
- clavicorn
- clavicytherium
- clavier
- claviform
- Clavius
- clavola
- clavus
- claw
- claw-and-ball foot
- clawback
- claw back
- claw bar
- clawed
- claw foot
- claw hammer
- claw hatchet
- claw off
- claw setting
- Clawson
- claxon
- clay
- Clay
- Clay, Henry
- claybank
- Clayborn
- clay-colored robin
- clay-colored sparrow
- clay court
- clay eater
- clayey
- clay flour
- claymation
- Claymation
- clay mineral
- claymore
- claymore mine
- claypan
- clay pigeon
- clay road
- claystone
- clay stone
- Clayton
- Clayton Antitrust Act
- Clayton-Bulwer Treaty
- claytonia
- CLC
- cld.
- Clea
- clean
- cleanability
- clean and jerk
- clean as a whistle
- clean bill of health
- clean breast
- clean-cut
- clean eating
- clean energy
- cleaner
- clean food
- clean-handed
- clean hands
- clean hands, have
- clean house
- cleaning
- cleaning woman
- clean-limbed
- cleanliness
- cleanliness is next to godliness
- Cleanliness is next to godliness
- clean-living
- cleanly
- cleanness
- cleanout
- clean out
- clean room
- cleanse
- cleanser
- clean-shaven
- clean sheet
- cleansing tissue
- cleanskin
- clean slate
- clean someone's clock
- clean sweep
- clean-tech
- clean technology
- Cleanthes
- cleanup
- clean up
- clean wool
- clear
- clear-air turbulence
- clearance
- clear and present danger
- clear as a bell
- clear as crystal
- clear as mud
- clear away
- clear channel
