most ad-lib (adjective) ad-lib: at one's pleasure
Sinonime: advanced, advancing,
ahead,
along, ante, antecedently, at an advantage, at the head,
before, beforehand,
earlier,
first, fore,
foremost,
forward, forwards, in the foreground, in the lead,
leading,
on, onward, onwards,
precedent, precedently,
preceding,
previous, progressing, to the fore
Antonime: behind