General synonyms:
* Dispersed
* Spread out
* Dispersed
* Diffused
* Strewn
* Disseminated
* Disbursed
More specific synonyms:
* Random: Haphazard, irregular, erratic
* Sparse: Thin, scattered, infrequent
* Fragmented: Broken up, separated, divided
* Disorganized: Chaotic, untidy, disordered
* Sparse: Thin, scattered, infrequent
* Desultory: Aimless, unfocused, random
Synonyms related to specific objects:
* Leaves: Littered, strewn, strewn about
* Thoughts: Rambling, disjointed, incoherent
* People: Dispersed, separated, spread out
The best synonym will depend on the specific meaning you want to convey.