1. A state of readiness to respond
   "alerting was indicated by the desynchronization of the EEG"
   - alertness 
2. A warning serves to make you more alert to danger
   - alert

1. Warn or arouse to a sense of danger or call to a state of preparedness
   "We alerted the new neighbours to the high rate of burglaries"
   - alarm

Type of: arousal, warn, warning

Encyclopedia: Alert, Canada Alert, Indiana Alert Alert, Aware, Involved Alert, OH Alert, Ohio Alert, Nunavat Alert, Nunavut

• half-witted
• half-yearly
• halfback
• halfbeak
• halfhearted
• halfpenny
• halfpennyworth
• halftime
• halftone
• halftone engraving
• halfway
• halfway house
• Haliaeetus
• Haliaeetus leucocephalus
• Haliaeetus leucorhyphus
• Haliaeetus pelagicus
• Haliatus albicilla
• halibut
• halibut-liver oil
• Halicarnassus
• Halicoeres
• Halicoeres bivittatus
• Halicoeres radiatus
• Halictidae
• halide