- on|to
- on|to «ON too, AWN-; before consonants often ON tuh, AWN-», preposition.1. on to; to a position on or upon: »
to throw a ball onto the roof, to get onto a horse, a boat driven onto the rocks.
2. Informal. familiar with; aware of; experienced in: »It doesn't take long to get onto him and his alibis.
Useful english dictionary. 2012.