Hap-pening (5)
I believe the answer is:
event
(Other definitions for event that I've seen before include "A noteworthy happening or occurrence" , "Race contest; occasion" , "'Occurrence, happening (5)'" , "heat, perhaps" , "Function" .)
I believe the answer is:
event
(Other definitions for event that I've seen before include "A noteworthy happening or occurrence" , "Race contest; occasion" , "'Occurrence, happening (5)'" , "heat, perhaps" , "Function" .)