Etymograph

English

everwhich

From ever + which.

A compound of ever + which

Old English ǣfre

Middle English ever

English ever

Proto-Indo-European *kʷ- ‘interrogative root’

…

Proto-Germanic *hwaz ‘who, what’

Proto-Germanic *hwilīkaz ‘what kind of’

Old English hwelċ ‘which’

Middle English which

English which

The story

Formed similarly to the older words each, every and German irgendwelche.

Today it means

adv Whichever.

Language periods are conventional ranges, not dates for this word.

Etymograph / everwhich