Related Clues:
- Fire in a kiln
- Heat and cool, to strengthen
- Sudden outburst of anger
- Tendency to anger easily
- Home of Arizona State University
- Short fuse, so to speak
- When repeated, statement after an explosion
- Heat and then cool
- Display of anger
- Harden by cooling
- Fire or glaze as in kiln
- Toughen with anger
- Bad humour
- Heat and cool slowly in order to toughen
- Heat and cool to temper or toughen