DC

1. Da capo (Italy; music), return to the beginning
2. Detective Constable
3. Direct current (also dc; elec)
4. District Commissioner
5. District of Columbia (US federal district)
6. Doctor of Chiropractic

• grumble
• grumbled
• grumbler
• grumblers
• grumbles
• Grumbletonian
• grumblier
• grumbliest
• grumbling
• grumbling appendices
• grumbling appendix
• grumbling appendixes
• grumblingly
• grumblings
• grumbly
• grume
• grumes
• grumly
• grummer
• grummest
• grummet
• grummet-hole
• grummet-holes
• grummets
• grumness