This list contains all the adverbs used in the English language that start with C. It includes negative and positive adverbs with C to describe a person.
| Caddishly | Cagily | Cajolingly |
| Calculatingly | Callously | Callowly |
| Calmingly | Calmly | Calumniously |
| Candidly | Cankeredly | Cannibally |
| Cannily | Canny | Cantankerously |
| Capably | Capitally | Capriciously |
| Captiously | Captivatedly | Captivatingly |
| Carefully | Carelessly | Caressingly |
| Caringly | Carnally | Carnivorously |
| Casually | Casuistically | Catastrophically |
| Catatonically | Categorially | Categorically |
| Catholicly | Cat-like | Cattily |
| Caudad | Caudally | Causally |
| Caustically | Cautiously | Cavalierly |
| Cavilingly | Ceaselessly | Celibately |
| Censoriously | Centrally | Cephalad |
| Cerebrally | Ceremonially | Ceremoniously |
| Certainly | Certes | Chagrinedly |
| Challengingly | Chanceably | Changeably |
| Chantingly | Chaotically | Characteristically |
| Chargeably | Charily | Charismatically |
| Charitably | Charmingly | Chastely |
| Chastenedly | Chattily | Chauvinistically |
| Cheap | Cheaply | Cheekily |
| Cheerfully | Cheerily | Cheeringly |
| Cheerlessly | Cheesily | Chemically |
| Cherishedly | Cherishingly | Cherubically |
| Chidingly | Chiefly | Childishly |
| Chillily | Chillingly | Chimingly |
| Chintzily | Chipperly | Chirpily |
| Chirpingly | Chivalrously | Choicely |
| Chokingly | Cholericly | Chorally |
| Chronologically | Chubbily | Chuffily |
| Chunkily | Churlishly | Circuitously |
| Circularly | Circumspectly | Circumstantially |
| Civilly | Clairvoyantly | Clammily |
| Clandestinely | Clannishly | Clarifyingly |
| Clashingly | Classically | Classily |
| Classlessly | Clatteringly | Claustrophobically |
| Clean | Cleanlily | Cleanly |
| Cleansingly | Clear | Clearer |
| Clearly | Cleverly | Climatically |
| Clingingly | Clinically | Clinkingly |
| Cliquishly | Cloakedly | Clockwise |
| Close | Closely | Close-mindedly |
| Closer | Closest | Cloudily |
| Cloyingly | Clubbily | Cluelessly |
| Clumsily | Coach | Coactively |
| Coarsely | Coastward | Coastways |
| Coaxingly | Cockily | Coequally |
| Cogently | Cognisantly | Cognitively |
| Cognizably | Cognizantly | Coherently |
| Coincidentally | Cold | Cold-bloodedly |
| Coldheartedly | Coldly | Collect |
| Collectedly | Collectively | Collingly |
| Colorfully | Colorlessly | Colourfully |
| Colourlessly | Coltishly | Comatosely |
| Combatively | Comelily | Comfortably |
| Comfortedly | Comfortingly | Comfortlessly |
| Comically | Commandingly | Commendatorily |
| Commodiously | Commonly | Communally |
| Communicatively | Compactly | Companionably |
| Comparably | Comparatively | Comparingly |
| Compassionately | Compatibly | Compellingly |
| Compensatingly | Competently | Competitively |
| Complacently | Complainingly | Complaisantly |
| Complementarily | Completely | Complexly |
| Compliantly | Complicatedly | Complicitly |
| Complimentarily | Composedly | Comprehendingly |
| Comprehensibly | Compromisingly | Comptly |
| Compulsively | Compulsorily | Concavely |
| Concealingly | Concedingly | Conceitedly |
| Conceivably | Concentratedly | Concernedly |
| Concertedly | Conciliatorily | Concisely |
| Concludingly | Conclusively | Concretely |
| Concupiscently | Concurrently | Concurringly |
| Condescendingly | Condignly | Conditionally |
| Conducibly | Confidentially | Confidently |
| Confidingly | Confinedly | Confirmingly |
| Conflictedly | Confoundedly | Confusedly |
| Confusingly | Congenially | Congestedly |
| Congratulatorily | Congruently | Conically |
| Conjointly | Conjugally | Conjunctly |
| Connately | Connivingly | Conscientiously |
| Consciously | Consecutively | Consensually |
| Consentedly | Consentingly | Consequently |
| Conservatively | Considerably | Considerately |
| Consideringly | Consistently | Consolingly |
| Conspicuously | Conspiratorially | Constantly |
| Constrictedly | Constrictingly | Constrictively |
| Constructively | Consumedly | Consumingly |
| Consummately | Contagiously | Contemplatively |
| Contemptibly | Contemptuously | Contentedly |
| Contentiously | Contently | Continently |
| Continually | Continuingly | Continuously |
| Contra | Contradictorily | Contrarily |
| Contrastingly | Contritely | Contrivedly |
| Controlledly | Contumaciously | Contumeliously |
| Conveniently | Conversationally | Conversely |
| Convexly | Convincedly | Convincingly |
| Convivially | Convolutely | Convulsively |
| Cool | Coolingly | Coolly |
| Cooperatively | Coordinately | Copiously |
| Coquettishly | Cordately | Cordially |
| Cornerwise | Corporally | Correctedly |
| Correctively | Correctly | Correspondingly |
| Corruptly | Cortically | Cosily |
| Cosmically | Costively | Coughingly |
| Counter | Counter-clockwise | Counterproductively |
| Courageously | Courteously | Covenably |
| Covertly | Covetously | Cowardly |
| Coyly | Cozily | Crabbily |
| Craftily | Crankily | Crassly |
| Cravenly | Crazily | Creakily |
| Creakingly | Creamily | Creatively |
| Credibly | Creditably | Credulously |
| Creepily | Creepingly | Crescendingly |
| Crestfallenly | Criminally | Cringingly |
| Crisply | Critically | Croakily |
| Croakingly | Crookedly | Crossingly |
| Crossly | Crossways | Crowdedly |
| Crucially | Crudely | Cruelly |
| Crunchily | Crushedly | Crushingly |
| Crustily | Cryptically | Cubically |
| Culinarily | Culpably | Cultivatedly |
| Culturally | Culturedly | Cumbersomely |
| Cunningly | Curiously | Curlingly |
| Curmudgeonly | Currently | Currishly |
| Cursedly | Cursively | Curstfully |
| Curtly | Curvedly | Cussedly |
| Customably | Customarily | Cutely |
| Cuttingly | Cyclically | Cynically |
