Final answer:
The word that was popularized as an appellation of the witches in "Macbeth" is "weird."
Step-by-step explanation:
In William Shakespeare's play "Macbeth," the term "weird sisters" serves as an intriguing appellation for the three witches who play a pivotal role in the unfolding tragedy. The term "weird" in this context extends beyond its contemporary usage, delving into the supernatural and mysterious realm. These enigmatic figures are not merely eccentric or odd but embody a supernatural essence, entwining fate with their mystical prophecies.
The epithet "weird sisters" encapsulates their otherworldly nature, suggesting an uncanny connection to destiny. Shakespeare's use of language here adds a layer of mysticism, contributing to the play's dark and foreboding atmosphere, while simultaneously elevating the witches to a realm beyond the ordinary.