an unpleasant emotion caused by the belief that someone or something is dangerous, likely to cause pain, or a threat
be afraid of (someone or something) as likely to be dangerous, painful, or threatening
fear resulting from the awareness of danger
warn or arouse to a sense of danger or call to a state of preparedness
a clock that wakes a sleeper at some preset time
a device that signals the occurrence of some undesirable event
fill with apprehension or alarm; cause to be unpleasantly surprised
an automatic signal (usually a sound) warning of danger
