bottle out
US /ˈbɑː.t̬əl aʊt/
UK /ˈbɑː.t̬əl aʊt/

1.
berundur, hilang keberanian
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.
Dia hendak mengajaknya keluar, tetapi dia berundur pada saat-saat akhir.
•
Don't bottle out now, you've come too far!
Jangan berundur sekarang, anda sudah terlalu jauh!