Courteous is a synonym of nice. Courteous is a synonym of nice.
Cornflower is nice. The color is beautiful.
Cool
civilization crowd
contrary contradict
convene also collect
Cool.
A word that starts with C and means "accident prone" is "clumsy".
Cornflower is nice. The color is beautiful.
cram
capitulate
Carnation.
crismatic
It could be the word cheap
cadaverous
condense
clear or clean
complaisantcondescendingconsiderate