legitimate, validated, well-grounded, reasoned, logical, sound, legal, unexpired, binding, invalid, more...

invalid, false, void, illegitimate, incorrect

supplied, how, unofficial, face, public, initial, content, non, applicable, private, static

good point,   always true,   legally real,   fair point,   has a point,   not expired,   is true,   correct code,   like some arguments,   had a point