1. [adj]  not changeable; "a period of settled weather"
2. [adj]  clearly defined; "I have no formed opinion about the chances of success"
3. [adj]  inhabited by colonists
4. [adj]  established in a desired position or place; not moving about; "nomads...absorbed among the settled people"; "settled areas"; "I don't feel entirely settled here"; "the advent of settled civilization"
5. [adj]  established or decided beyond dispute or doubt; "with details of the wedding settled she could now sleep at night"

SETTLED is a 7 letter word that starts with S.