WordWeb Online

1. Free
   "a man with a mule got my car unstuck"; "the gears locked in second and would not come unstuck"
    
2. Thrown into a state of disorganization or incoherence
   "price programs became unstuck because little grain was available"
   - undone

1. To release, as one thing stuck to another
   "Use a trowel to unstick the wood sash"

See also: disorganised [Brit], disorganized

Antonym: stuck