1. Lacking professional skill or expertise
   "a very amateurish job"
   - amateur, inexpert, unskilled

See also: amateurishness, unprofessional

• genus Cephalotus
• genus Cepphus
• genus Cerapteryx
• genus Cerastes
• genus Cerastium
• genus Ceratitis
• genus Ceratodus
• genus Ceratonia
• genus Ceratopetalum
• genus Ceratophyllum
• genus Ceratopogon
• genus Ceratopteris
• genus Ceratosaurus
• genus Ceratostomella
• genus Ceratotherium
• genus Ceratozamia
• genus Cercidiphyllum
• genus Cercidium
• genus Cercis
• genus Cercocebus
• genus Cercopithecus
• genus Cercospora
• genus Cercosporella
• genus Cereus
• genus Ceroxylon