Synonyms for Sprawl (same or very similar meaning)
WordNet sense 1 (an aggregation or continuous network of urban communities):
conurbation, urban sprawlWordNet sense 2 (an ungainly posture with arms and legs spread about):
sprawlingWordNet sense 3 (go, come, or spread in a rambling or irregular way):
straggleFrom the ODE community, based on WordNetadd/edit