Alarm

Noun

 * 1) A summons to arms, as on the approach of an enemy.
 * 2) Any sound or information intended to give notice of approaching danger; a warning sound to arouse attention; a warning of danger.
 * 3) Sudden surprise with fear or terror excited by apprehension of danger; in the military use, commonly, sudden apprehension of being attacked by surprise.
 * 4) A mechanical device for awaking people, or rousing their attention.
 * 5) An instance of an alarum ringing or clanging, to give a noise signal at a certain time.

Verb

 * 1) To call to arms for defense
 * 2) To give (someone) notice of approaching danger
 * 3) To rouse to vigilance and action; to put on the alert.
 * 4) To surprise with apprehension of danger; to fill with anxiety in regard to threatening evil; to excite with sudden fear.
 * 5) To keep in excitement; to disturb.

Adjectives for Alarm
serious; groundless;  vague;  superstitious; unnecessary; high; nocturnal; perpetual; tremulous; faint; profound; spectral; manifest; shrill; evident; grave; imminent; scandalized; unfounded; painful; imbecile; grim; mute; abrupt; midnight; uneasy; sounding; friendly; grisly; deadly; incessant.

Verbs for Alarm
answer; bewilder by; blow; broadcast; burden with; check; chime; cry; discourage undue; excite; exclaim in; give rise to; incite; occasion; peal;  produce;  recoil  in;  respond to; shake with; shudder in; signal;  sound;  strike;  suppress; take; transmit; awakens; clangs; demoralizes; dismays; disturbs; notifies;  signifies;  spreads;  startles; steals over one; subsides; summons; surprises; vanishes; warns.

Adverbs for Alarm
sincerely; fearfully; seriously; astoundingly; exceedingly; groundlessly; unnecessarily; vaguely; superstitiously; perpetually; faintly;  profoundly; manifestly; gravely; painfully; abruptly; incessantly.

Synonyms for Alarm
terror, fright, fear, consternation, panic, dread, affright, apprehension.

Antonyms for Alarm
security, peace, confidence, assurance.

Related terms

 * alarm bell
 * alarm clock
 * alarm reaction
 * fire alarm
 * raise the alarm
 * alarming
 * alarmist

Thesaurus
abject fear; admonishment; admonition; affright; aid to navigation; alarum; alert; amaze; amber light; anxiety; apprehension; arouse; astonish; awe; balefire; battle cry; beacon; beacon fire; bell; bell buoy; birdcall; blinker; blue funk; blue peter; bugle call; buoy; call; caution; caution light; caveat; cold feet; consternation; cowardice; cry havoc; cry wolf; curdle the blood; daunt; deterrent example; discomfort; dismay; disquiet; distress; disturb; dread; example; excitement; fear; final notice; final warning; flare; fly storm warnings; fog bell; fog signal; fog whistle; foghorn; forewarning; fright; frighten; funk; glance; go light; gong; gong buoy; green light; heliograph; high sign; hint; horn; horrification; horripilate; horror; international alphabet flag; international numeral pennant; kick; last post; leer; lesson; make one tremble; marker beacon; monition; moose call; moral; nervousness; nod; notice; notification; nudge; object lesson; panic; panic fear; parachute flare; phobia; pilot flag; poke; police whistle; prenotice; quarantine flag; radio beacon; raise apprehensions; rallying cry; rebel yell; red flag; red light; reveille; rocket; sailing aid; scare; semaphore; semaphore flag; semaphore telegraph; shake; sign; signal; signal beacon; signal bell; signal fire; signal flag; signal gong; signal gun; signal lamp; signal light; signal mast; signal post; signal rocket; signal shot; signal siren; signal tower; siren; sound the alarm; sound the tocsin; spar buoy; spook; stagger; stampede; startle; stop light; strain; stress; summons; surprise; taps; tension; terrify; terror; terrorize; the nod; the wink; threat; tip-off; tocsin; touch; traffic light; traffic signal; trepidation; trumpet call; ultimatum; uneasiness; unholy dread; unman; unnerve; unstring; upset; verbum sapienti; war cry; warn; warning; warning piece; watch fire; whistle; white flag; wigwag; wigwag flag; wink; yellow flag

Alternative forms

 * alarum

Etymology
From alarme, alarom, from  alarme, itself from Old  undefined:, ultimately from  arma:.

Pronunciation