1.
Someone or something that is ~ is approved of by society and considered to be morally correct.
He came from a perfectly ~ middle-class family...
ADJ
respectably
She’s respectably dressed in jeans and sweatshirt.
ADV
respectability
If she divorced Tony, she would lose the respectability she had as Mrs Tony Tatterton.
N-UNCOUNT
2.
You can say that something is ~ when you mean that it is good enough or acceptable.
...investments that offer ~ rates of return...
= decent
ADJ