Clue: A word of four letters

Answer: TETRAGRAM

Length: 9

---

Similar Clues:

• Post-office alert letters (AKA with 3 letters)
• Word on French airmail letters (AVION with 5 letters)
• Former UN leader Hammarskjöld [Note: The circled letters comprise a three-word instruction that, when applied to one square in the completed grid, reveals a group who might follow a code of silence] (DAG with 3 letters)
• Word that can precede each set of circled letters, forming a literal hint for entering certain answers in this puzzle (JUMP with 4 letters)
• Word or phrase with no repeated letters, such as every answer in this puzzle (ISOGRAM with 7 letters)
• Word or phrase that has no repeated letters (every answer in this puzzle is an example of one) (ISOGRAM with 7 letters)
• Magician, and word whose ten letters make up every answer in this puzzle (PRESTIDIGITATOR with 15 letters)
• Italian word that becomes English after deleting its third, fourth, and fifth letters (SIGNOR with 6 letters)
• Supply hidden in the first two letters of the long answers' words (SOAP with 4 letters)
• The longest word containing only letters from the second half of the alphabet (SOUPSPOONS with 10 letters)