alarm signals
Signs of trouble
Alarm signals are warnings of danger or emergency.
In biology, they're sounds, chemicals, or behaviors that alert others to threats—a bird's sharp call when a predator approaches, or pheromones released by insects.
In human contexts, alarm signals include sirens, flashing lights, or any indication that something is wrong: The market's volatility sent alarm signals to investors.
- warningAlert about danger
- early warningAlert before event occurs
- sirenWailing alert device
- alertWarning or watchfulness
- dangerExposure to harm
code red · red flag · distress · cry for help · emergency · flashing · beeping · ringing ears · horn · klaxon · panic · threat · whistle · beacon · smoke detector · cry · scream · blaring
- animal signalsbody language, bird songs, tail wagging, mating calls, whale song
- nonverbal communicationgestures, pointing, body language, facial expressions, sign language
- ant colonyqueen ant, worker ant, worker ants, workers, soldiers
- chemical signalspheromone, pheromones, chemical messengers, sex pheromones, attractant
- colony behaviorswarming, foraging, division of labor, caste system, food storage
- animal defensespoison, venom, toxin, toxins, horns
alarm signalssoothing sounds
lullabies · white noise · silence · ambient sounds · background noise
alarm, signal, alarms, signals, alarming, alarmed, alarmist, alarmism, signaling