bottle out
US /ˈbɑː.t̬əl aʊt/
UK /ˈbɑː.t̬əl aʊt/
1.
to lose one's nerve and decide not to do something
:
•
He was going to ask her out, but he bottled out at the last minute.
•
Don't bottle out now, you've come too far!
to lose one's nerve and decide not to do something