1. Not easily perturbed or excited or upset; marked by extreme calm and composure
   "hitherto imperturbable, he now showed signs of alarm"; "an imperturbable self-possession"
   - unflappable

See also: composed, imperturbableness

• colourfast
• colourful
• colourfully
• colouring
• colouring book
• colouring material
• colourise
• colourist
• colourize
• colourless
• colourlessness
• colours
• colpitis
• colpocele
• colpocystitis
• colpocystocele
• colportage
• colporteur
• colposcope
• colposcopy
• colpoxerosis
• colt
• coltan
• colter
• coltish