• bringon,
• vrink on,
• nrink on,
• hrink on,
• grink on,
• beink on,
• bdink on,
• bfink on,
• btink on,
• b5ink on,
• b4ink on,
• brunk on,
• brjnk on,
• brknk on,
• bronk on,
• br9nk on,
• br8nk on,
• bribk on,
• brimk on,
• brijk on

The adverb form of "brink on" is "brinkingly".

The adjective form of "brink on" is "brinkish". However, "brinkish" is a relatively uncommon and not widely recognized word. It is often more appropriate to use other alternatives such as "near," "close," or "approaching".