'well-off' definitions:

Definition of 'well-off'

From: WordNet
adjective
In fortunate circumstances financially; moderately rich; "they were comfortable or even wealthy by some standards"; "easy living"; "a prosperous family"; "his family is well-situated financially"; "well-to-do members of the community" [syn: comfortable, easy, prosperous, well-fixed, well-heeled, well-off, well-situated, well-to-do]
adjective
Fortunately situated; "doesn't know when he's well-off"

Synonyms of 'well-off'

From: Moby Thesaurus