1. Not firmly placed, set or fastened
   "The unfixed shelf wobbled dangerously"
    
2. Lacking definition or definite content
   "unfixed as were her general notions of what men ought to be";
   - nebulous

1. To loosen or detach from anything that holds
   "He unfixed the painting from the wall"
    
2. To make uncertain or unstable; unsettle
   "The unexpected news unfixed their plans for the weekend"

See also: detached, floating, free, indefinite, insecure, unfirm, unsteady

Antonym: fixed