- A threat
- Danger
- Intimidate
- Nuisance for the chaps with top serve
- Threat
- Threaten
- Troublemaker
- Hostility
- Hostility from gas regions
- Offensive action
- Physical threat
- The first attack, or act of hostility; the first act of
injury, or first act leading to a war or a controversy; unprovoked
attack; assault; as, a war of aggression. "Aggressions of power."
- Facing extinction
- Gene arranged to box Dan before Red could be put at risk
- Imperilled
- Threatened
- Under threat
- of Endanger