verge on
To approach or come close to something; to border or be on the edge of something.
His actions verge on insanity, making everyone nervous.
ADJ
grass | motorway, roadside
VERB + VERGE
bring sb/sth to
The company's poor decisions brought the business to the verge of bankruptcy.
PREP
on the ~
He was on the verge of quitting his job when his boss finally offered him a promotion.