- Adamant
- Determined
- Determined to be sore about medieval stringed instrument
- Determined to fabricate our steel
- Purposeful; determined
- Unbending
- Unshaken
- Crim at heart? Dig up stiff
- Drilling platform identity card is inflexible
- Frozen solid
- Immobile
- Inflexible
- Inflexible or strict
- Not pliant or flexible