English

Mondayish

From Monday + -ish.

A compound of Monday + -ish

Proto-Indo-European *dʰegʷʰ- ‘to burn’

Proto-West Germanic *mānini dag

Old English mōnandæġ ‘day of the moon’

Middle English Monday

Today it means

adv On or around Monday.

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

Etymograph / Mondayish