WordWeb Online

1. Still in doubt
   "an unsettled issue"; "an unsettled state of mind"
    
2. Not settled or established
   "an unsettled lifestyle"
    
3. Subject to change
   "unsettled weather with rain and hail and sunshine coming one right after the other"
   - changeable, uncertain
    
4. Not yet settled
   "unsettled territory"

1. Disturb the composure of
   - faze, unnerve, enervate

See also: aimless, doubtful, drifting, erratic, floating, homeless, itinerant, migrant, migratory, mobile, nomadic, open, peregrine, peripatetic, planetary, rootless, roving, stateless, tentative, undecided, undetermined, uninhabited, unlocated, unresolved, vagabond, vagrant, variable, wandering, wayfaring

Type of: discomfit, discompose, disconcert, untune, upset

Antonym: settled