- Classy Adj. Adv.
- Clavately Adv.
- Clayly Adv. Adj.
- Clean Adj. Verb Adv. Subst.
- Cleanly Adv. Adj.
- Clear Adj. Verb Adv. Subst. Inter.
- Clearheadedly Adv.
- Clearly Adv.
- Clemently Adv.
- Clerically Adv.
- Clerkly Adv. Adj.
- Clever Adj. Adv.
- Cleverly Adv.
- Client-side Adj. Subst. Adv.
- Climactically Adv.
- Climatically Adv.
- Climatologically Adv.
- Clinically Adv.
- Cliquishly Adv.
- Cloakedly Adv.
- Clocklike Adj. Adv.
- Clockwise Adj. Adv.
- Clonally Adv.
- Close Adj. Subst. Verb Adv.
- Close-up Subst. Adj. Adv.
- Closely Adv.
- Closer Subst. Adj. Adv.
- Cloudily Adv.
- Cloudlessly Adv.
- Cloudlike Adj. Adv.
- Cloudly Adj. Adv.
- Clownishly Adv.
- Cloyingly Adv.
- Clumsily Adv.
- Clusteringly Adv.
- Clutchless Adj. Adv.
- Coarsely Adv.
- Coastally Adv.
- Coastwise Adj. Adv.
- Coaxially Adv.
- Coaxingly Adv.
- Cockeyed Adj. Adv.
- Cockhorse Subst. Adv. Adj.
- Cockily Adv.
- Cocksure Adj. Adv.
- Coeducationally Adv.
- Coefficiently Adv.
- Coenzymatically Adv.
- Coequally Adv.
- Coercively Adv.
- Coevally Adv.
- Coextensively Adv.
- Cofinally Adv.
- Cogently Adv.
- Cogitatively Adv.
- Cognisably Adv.
- Cognitively Adv.
- Cognizably Adv.
- Cogradiently Adv.
- Coherently Adv.