head·shake 
(hĕdshāk′)
(hĕdshāk′)n.
A turning of one's head to the right and left, signifying denial, disapproval, disbelief, doubt, or bewilderment.
headshak′ing adj. & n.
- carbon process
- carbon star
- carbon tetrachloride
- carbonyl
- carbonylic
- carborane
- Carborundum
- carboxy-
- carboxyhemoglobin
- carboxyl
- carboxylase
- carboxylate
- carboxylation
- carboxylic
- carboxylic acid
- carboxymethylcellulose
- carboxypeptidase
- carboy
- carbuncle
- carbuncled
- carbuncular
- carburet
- carburetion
- carburetor
- carburization