See Also:

on to (iou)



on to preposition. See also ONTO. L16.
[from ON adverb + TO preposition, with the same relation to on as into has to in.]
To a position or state on or upon; into contact with. L16.
Dickens Assisting Mr. Pickwick on to the roof. H. Maudsley If laid on its back, it struggles on to its legs again. Independent There's no newsI've been on to the cops every hour.
Aware of, knowledgeable about. colloq. (orig. US). L19.
M. Gee Maybe she knew he was on to her.