reunion

have, hold, plan

My family is planning a reunion for next summer at our grandparents' house.

celebrate

After 10 years apart, the whole family gathered to celebrate their reunion.

at a/the ~

I had a wonderful time at the reunion and reconnected with old classmates from school.

~ between

The unexpected reunion between old college friends turned into an all-night celebration.

~ for

My family is planning a big reunion for everyone who hasn't seen each other in years.

~ with

After ten years abroad, she looked forward to a joyful reunion with her old school friends.