Undeliverable letter, in post-office talk (5 letters) — Crossword Helper

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The Clue

Undeliverable letter, in post-office talk (5 letter answer)

The Answer

NIXIE

Tags

dead letter mail nixie office piece post sprite talk undeliverable water

Notes

The answer NIXIE is so rare that it appears less than once every 2900 puzzles.

Related Clues

Water sprite
Undeliverable piece of mail
Dead letter, in post office talk