1. Combining into a single unit
   - consolidative 
2. Tending to unify
   - centripetal

1. Become one
   "Germany unified officially in 1990"
   - unite, merge 
2. To bring or combine together or with something else
   - mix, mingle, commix, amalgamate 
3. Bring together for a common purpose or action or ideology or in a shared situation
   - unite 
4. Act in concert or unite in a common purpose or belief
   - unite 
5. Join or combine
   - unite, merge

See also: centralising [Brit], centralizing, integrative, unification, unit

Type of: alter, change, fall in, get together, integrate, join, modify

Antonym: disunify

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