Meredith as a "mean girl" name might be entirely due to the character Meredith Blake in the 1998 remake of
The Parent Trap, who was a total gold-digger. Every 90s kid recognizes the slow dolly shot where Meredith lifts her head, and you see the perfectly made up face underneath her hat:
https://tinyurl.com/MeredithBlakeHatGif
Personally speaking, though, Meredith is one of the few names ending in "-th" that I actually like, though I think it works best as a middle name. I had Diana Meredith as a combo for a spell. I also thought about Yasmine Meredith, Naomi Meredith, and Jane Meredith.
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www.behindthename.com/pnl/69381www.behindthename.com/pnl/69381/109399www.behindthename.com/pnl/69381/91835http://greens-end.myminicity.com/