- Cathodically Adv
- Catholically Adv
- Cationically Adv
- Catlike Adj Adv
- Catoptrically Adv
- Cattily Adv
- Caudally Adv
- Causally Adv
- Causelessly Adv
- Caustically Adv
- Cautiously Adv
- Cavalierly Adv
- Cavernously Adv
- Ceaselessly Adv
- Celestially Adv
- Cellwise Adj Adv
- Cenogenetic Adj Adv
- Censoriously Adv
- Centeredly Adv
- Centrally Adv
- Centredly Adv
- Centrifugally Adv
- Centripetally Adv
- Cephalically Adv
- Cerebrally Adv
- Ceremonially Adv
- Ceremoniously Adv
- Certainly Adv Inter
- Certes Adv
- Certifiably Adv
- Chainlike Adj Adv
- Chainwise Adv Adj
- Chairside Adj Adv
- Challengingly Adv
- Chancily Adv
- Changeably Adv
- Chaotically Adv
- Characteristically Adv
- Characterologically Adv
- Charily Adv
- Charismatically Adv
- Charitably Adv
- Charmingly Adv
- Chastely Adv
- Chattily Adv
- Chauvinistically Adv
- Cheap Adj Adv
- Cheaply Adv
- Cheatingly Adv
- Cheekily Adv
- Cheerfully Adv
- Cheerily Adv
- Cheerlessly Adv
- Cheerly Adv Adj
- Cheery Adj Adv
- Cheesily Adv
- Chemically Adv
- Chemoautotrophically Adv
- Chemotactically Adv
- Chemotherapeutically Adv