General:
* multifaceted: having many aspects
* multifarious: having great variety
* multiform: having many forms
* multi-lingual: speaking multiple languages
* multi-sensory: involving multiple senses
* multi-talented: having many talents
* multi-task: to perform multiple tasks at the same time
* multitude: a large number
Specific:
* multi-billion: more than one billion
* multi-colored: having many colors
* multi-dimensional: having more than three dimensions
* multi-ethnic: consisting of people from various ethnicities
* multi-generational: spanning multiple generations
* multi-million: more than one million
* multi-purpose: having multiple uses
* multi-player: involving multiple players
* multi-track: having multiple audio tracks
Other:
* multi-pronged: involving many approaches
* multi-headed: having multiple heads
* multi-faceted: having many sides
* multi-layered: having many layers
* multi-level: having many levels
This is just a small sample of words with the prefix "multi-". There are many more words out there, and new ones are being created all the time!