- unfixed - not firmly placed or set or fastened
Antonyms: fixed, fast, firm, immobile, leaded, stationary, taped, unadjustable, geostationary, geosynchronous
- nebulous, unfixed - lacking definition or definite content; "nebulous reasons"; "unfixed as were her general notions of what men ought to be"- Jane Austen
Antonym: definite (indirect, via indefinite)