Suffix   cious             

conscious                                                                                                     

precious                                                                                                        

unconscious                                                                                                 

suspicious                                                                                                      

delicious                                                                                                        

vicious                                                                                                           

spacious                                                                                                        

gracious                                                                                                        

ferocious                                                                                                       

malicious                                                                                                       

judicious                                                                                                        

vivacious                                                                                                      

luscious                                                                                              

atrocious                                                                                                                   

precarious                                                                                                                             

tenacious                                                                                                      

auspicious                                                                                                     

audacious