形容詞 well-off:

1. in fortunate circumstances financially; moderately rich
   同義詞：comfortable, easy, prosperous, well-fixed, well-heeled, well-situated, well-to-do
2. fortunately situated

well-off

adj.（形容詞）
Well-to-do.
有錢的
In fortunate circumstances.
幸運(yùn)的：有走運(yùn)的狀況下

來源：
off [circumstanced]
off[在某種環(huán)境下]
probably from the phrase to come well off [to emerge from in good circumstances]
可能源自片語 to come well off [從好的環(huán)境中出現(xiàn)]