hmmm
cancelling
calming/calm
concluding
comfort
composing
"Conceptualized" is the word that starts with a "c" and means to form an idea.
A word that starts with C and means "accident prone" is "clumsy".
Clap
comical
Carnation.
capitulate
cram
crismatic
Cool
caliente, cálido
cadaverous
condense