From Old English 'wyrd' (fate), from PIE *wert- (to turn) — originally 'connected to fate,' not 'strange.'
Suggesting something supernatural; uncanny; very strange or bizarre.
From Old English 'wyrd' meaning 'fate, destiny, the power that controls what happens,' from Proto-Germanic *wurdiz, from PIE root *wert- meaning 'to turn, to rotate.' The original noun referred to personal destiny — the force that turns the course of events. It survived as a noun into Middle English and appeared in Shakespeare's 'Macbeth' as the 'Weird Sisters,' meaning the Fate Sisters, not the peculiar sisters. The adjectival sense
Shakespeare's 'Weird Sisters' in Macbeth were not odd or eccentric — 'weird' meant 'having power over fate.' They were the Fate Sisters, modeled on the Norse Norns. The modern meaning of 'bizarre' only emerged in the early 1800s, making it one of the most dramatic semantic shifts in English literary history.