Why was clemency trending last week?
mid-15c., "chance, luck," from present participle of happen; meaning "occurrence" is 1550s. Sense of "spontaneous event or display" is from 1959 in the argot of artists. Happenings "events" was noted by Fowler as a vogue word from c.1905.
Narcotics; junk (1950s+ Narcotics)