English occurrence

← English occur (suffix)

← English ence (suffix)

← Middle French occurrence (derived)

← Proto-Indo-European *ḱers- (root)

← Latin occurrentia (mention)

→ English nonoccurrence (prefix)

→ English reoccurrence (prefix)

→ English cooccurrence (prefix)

→ English interoccurrence (prefix)

→ English occurrential (mention)