- Be afraid
- Be afraid of
- Be frightened of iron and argon
- Cowardice
- Dread
- Dread dropping the feather
- Foreboding
- A left-wing warning
- Apprehension
- Burglar deterrent
- Burglary warning
- Call to action
- Cowardice
- Danger alert
- Cowardice
- Yellowness apparent in invertebrates?