organiser

/ˈɔrɡənaɪzər/
noun
  1. A person who plans and arranges an event or activity.
    • The organiser of the festival did a fantastic job.
    • The event organiser sent out invitations to all the guests.
    • She is the main organiser for the school's charity run.
  2. A tool or system used to help keep things arranged, such as a planner or folder.
    • She bought a new desk organiser for her pens and papers.
    • This app is a great organiser for your daily tasks.
    • I use a digital organiser to keep track of my appointments.
Antonyms
What does "organiser" mean? | whatsthatwordmean | whatsthatwordmean