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

See also: amateurishness, unprofessional

• colour tube
• colour TV
• colour TV tube
• colour vision
• colour vision deficiency
• colour wash
• colour wheel
• colour-blind
• colour-blind person
• colourant
• colouration
• colourcast
• coloured
• coloured audition
• coloured hearing
• colourfast
• colourful
• colourfully
• colouring
• colouring book
• colouring material
• colourise
• colourist
• colourize
• colourless