I think I remember a video year ago talking about Thomas Jefferson saying that rights go as far as they do not infringe on any equal right of anyone else. Which seems to fit that definition.
I remember talking with a guy once that said something to the effect that rights are imaginary human contracts. I found his take on it interesting, although, I really couldn't bring myself to agree with him wholeheartedly.
Legal definition is kind of congruent with what he was telling me:
"A power or privilege held by the general public as the result of a constitution, statute, regulation, judicial precedent, or other type of law. 2. A legally enforceable claim held by someone as the result of specific events or transactions"
A definition like the one above would suggest that rights are more a matter of collective agreement than they are inherent. However, if you go into the history and the founders or most any "decent" constitution typically the collective agreement was founded on a set of moral precepts which goes back to rights being inherent to people.
The American Declaration of independence, which I can't help but read and or watch at least four times a year; I find it inspirational. In all the You Tube presentations, they always find a way to put emphasis on the single word "inalienable".