Related Clues:
- Unable to be forced out of shape
- Emotion-hiding sort
- Philosopher endlessly banal, one admitted
- Uncomplaining type
- Hardly the emotional type
- Hard to fake passport, perhaps?
- Stiff and unmoving
- No longer making progress
- Not easily moved
- Someone seemingly indifferent to pleasure or pain
- Like a dirigible, vis-a-vis a blimp
- Far from passionate
- Harsh soldier's shut outside
- Like drumstick
- Lionel Richie "___ on You"