occasion

US /əˈkeɪ.ʒən/
UK /əˈkeɪ.ʒən/
"occasion" picture
1.

a particular time or instance of an event

:
On one occasion, she forgot her lines.
I've met him on several occasions.
2.

a special event or celebration

:
Her wedding was a grand occasion.
Christmas is a joyous occasion for many.
1.

to cause or bring about (something)

:
His rude remarks occasioned a heated argument.
The new policy occasioned much debate.