The story
- Proto-Indo-European · derived from*peh₂-s-“watch, see”
- Latin · derived fromappāreō“to appear”
- Old French · derived fromaparoir
- Middle English · inherited fromapperen
- English todayappear
From Middle English apperen, aperen, borrowed from Old French aparoir (French apparoir), from Latin appāreō (“to appear”), from ad (“to”) + pāreō (“to come forth, to become visible”), ultimately from Proto-Indo-European *peh₂-s- (“watch, see”), s-present of *peh₂- (“protect”).
Etymology from Wiktionary, CC BY-SA 4.0.