1. Make an addition
   "Let's add on to this" 
2. Add to the very end
   - append, supplement, affix

1. A component that is added to something to improve it
   - addition, improver 
2. A supplementary component that improves capability
   - accessory, appurtenance, supplement

Derived forms: adding on, adds on, add-ons, added on

Type of: add, attach, component, constituent, element

Encyclopedia: Add-on

• Tabriz
• tabu
• Tabuk
• tabula
• wild snapdragon
• wild spinach
• wild spurge
• wild strawberry
• wild sweet pea
• wild sweet potato vine
• wild tamarind
• wild teasel
• wild thyme
• wild tobacco
• wild vanilla
• wild water lemon
• Wild West
• Wild West Show
• wild wheat
• wild wilkworm
• wild winterpea
• wild yam
• wild yellow lily
• wild-eyed
• wild-goose chase