The story
- Proto-Indo-European*kob-
- Proto-Germanic*hampą
- Proto-Germanic*hampijaną
- Old Norse*happader.?
- Proto-Germanic*hampijaną
- Old Norse*heppader.?
- Old Englishhæppander.?
- Middle Englishhappen
- Middle Englishhappenen
- English todayhappen
From Middle English happenen, hapnen, augmented from Middle English happen (“to come to pass, happen”), perhaps from Old English hæppan (“to move accidentally, slip”) and/or from Old Norse *happa, *heppa, from Proto-Germanic *hampijaną (“to fit in, be fitting”). Equivalent to hap (“a chance, occurrence, byfall”) + -en (verbal suffix).
Words from the same roots
Etymology from Wiktionary, CC BY-SA 4.0.