stumble on
US /ˈstʌm.bəl ɑːn/
UK /ˈstʌm.bəl ɑːn/

1.
menemukan secara kebetulan, menemukan
to discover something by chance
:
•
While cleaning the attic, she stumbled on an old photo album.
Saat membersihkan loteng, dia menemukan album foto lama secara kebetulan.
•
Researchers often stumble on important discoveries when they least expect it.
Peneliti sering menemukan penemuan penting ketika mereka tidak menduganya.