den¹ /den/

1. The hollow lair of a wild animal
2. A pit or cave
3. A haunt of vice or misery
4. A private domestic room or office for work or pleasure (informal)
5. A Cub Scout group (US)
6. A narrow valley, a dean (Scot)

To retire to a den

• countersealed
• countersealing
• counterseals
• counter-security
• counter-sense
• counter-senses
• countershading
• countershadings
• countershaft
• countershafts
• countersign
• counter-signal
• counter-signals
• counter-signature
• counter-signatures
• countersigned
• countersigning
• countersigns
• countersink
• countersinking
• countersinks
• counter-skipper
• counterspies
• counterspy
• counterspying