Clue: Letters accompanying a zero

Answer: OPER

Length: 4

---

Similar Clues:

• Letters accompanying some 2,000-year-old+ dates (BCE with 3 letters)
• Letters accompanying zero (OPER with 4 letters)
• Auto club letters (AAA with 3 letters)
• Auto-club letters (AAA with 3 letters)
• Auto-group letters (AAA with 3 letters)
• Atty. resume letters (ABA with 3 letters)
• Letters of attorney? (ABA with 3 letters)
• Adapter letters (ACDC with 4 letters)
• Electrical adapter letters (ACDC with 4 letters)
• Letters on an adaptor (ACDC with 4 letters)