- alarm
- alarm n1 Alarm, tocsin, alert agree in meaning a signal that serves as a call to action or to be on guard especially in a time of imminent danger.Alarm is used of any signal that arouses to activity not only troops, but emergency workers (as firemen, policemen); it suggests a sound such as a cry, a pealing of a bell, a beating of drums, or a siren{
sound a fire alarm
}{the dog’s barking gave the alarm
}Tocsin may be either an alarm sounded by bells usually from the belfry of a church or, more often, the bells sounding an alarm{the loud tocsin tolled their last alarm— Campbell
}but is used figuratively for any sort of warning of danger.Alert, a military term for a signal to be on guard and ready for expected enemy action, is often used for any warning of danger{sirens sounded an air-raid alert
}{the Weather Bureau issued a tornado alert in the early afternoon . . . . The alert was cancelled after 5 p.m.— Springfield Union
}It may also denote the state of readiness called for by the signal or warning or the period during which this is maintained{an abandon-ship alert was signaled. Warning for that . . . was to be four blasts of the ships whistle— Lowell Bennett
}{a peacetime round-the-clock alert against surprise aerial attack— A. Y. Times
}2 fright, *fear, panic, terror, horror, dismay, dread, consternation, trepidationAnalogous words: frightening, scaring, startling (see FRIGHTEN): agitation, perturbation, upset (see corresponding verbs at DISCOMPOSE)Antonyms: assurance: composureContrasted words: calmness, tranquillity, serenity (see corresponding adjectives at CALM): self-possession, self-assurance (see CONFIDENCE): *equanimity, sangfroidalarm vb *frighten, fright, scare, startle, terrify, affright, terrorize, affrayAntonyms: assure: relieveContrasted words: *comfort, solace, console
New Dictionary of Synonyms. 2014.