Related Clues:
- Dark lake surrounded by military group
- It's impossible, climbing or descending
- Without lights
- Learner in group lacking illumination
- Like a bedroom at night, typically
- Like a birthday cake, pre-party
- Off, palindromically
- With no illumination
- Working until dark
- I abandoned idea that's impossible
- Dark — somewhere to sleep in Paris
- Like matches that haven't been used yet
- Not on, as a lamp
- Impossible, however you look at it
- One including learner that's not illuminated