1. Arrange systematically or methodically
   "She organizes her closet by colour";
   - organise [Brit]
    
2. Bring order and organization to
   "Can you help me organize my files?";
   - organise [Brit], coordinate
    
3. Plan and control how a complex undertaking is done
   "he organized the robbery";
   - mastermind, engineer, direct, organise [Brit], orchestrate
    
4. Arrange by systematic planning and united effort
   "organize a strike";
   - organise [Brit], prepare, devise, get up, machinate
    
5. Bring together into a structured whole; establish an organization
   "social groups organize everywhere";
   - form, organise [Brit]
    
6. Form, join, or organize a labour union
   "The employees organized to demand better working conditions";
   - unionize, unionise [Brit], organise [Brit]

Derived forms: organized, organizing, organizes

Type of: arrange, care, create, deal, fall in, handle, initiate, join, make, manage, pioneer, plan, set up

Antonym: disorganize

Encyclopedia: Organize