once in a lifetime

US /wʌns ɪn ə ˈlaɪfˌtaɪm/
UK /wʌns ɪn ə ˈlaɪfˌtaɪm/
"once in a lifetime" picture
1.

sekali seumur hidup, jarang berlaku

an event or opportunity that is very rare and unlikely to happen again in a person's life

:
•
Seeing the total solar eclipse was a once in a lifetime experience.
Melihat gerhana matahari penuh adalah pengalaman sekali seumur hidup.
•
This opportunity to travel the world is truly a once in a lifetime chance.
Peluang untuk mengembara dunia ini benar-benar peluang sekali seumur hidup.
:
lifetimeoncebreak the habit of a lifetimeonce and for allonce upon a timeonce in a blue moongive somebody/something a once-over