Unconditional, a.
Not conditional limited, or conditioned; made without condition; absolute; unreserved; as, an unconditional surrender. O, pass not, Lord, an absolute decree, Or bind thy sentence unconditional. Dryden. -- Un`con*di"tion*al*ly, adv.
Shades of meaning
Fernald has no entry of its own for unconditional; he lists it under absolute.
He lists it without comment; the entries above explain its neighbors.