Related Clues:
- Strengthen little dog after appearance of aggressive male beast?
- Step up, as a conflict
- Increase production with two animals
- Accelerate in intensity
- Expand case cracked after deadline
- Doctor let a case threaten to get out of control
- Ramp up case cracked after deadline
- Intensify; step up
- Increase rapidly ... or a hint to connecting four pairs of answers in this puzzle
- Increase pace, winning
- Intensify, as effort
- Bolster or strengthen
- Key article delayed getting rocket
- Get warmer
- Male creature and baby get much more intense