alert Synonyms

lively brisk alive quick alarum awake alarm agile snappy watchful zippy active spright spanking signal signaling sophic signpost siren sleepless smart swarming wary warning warn wakeful waking vigilant vigilance usbeks undauntable ultimatum tendering tell spry shrug shrieker quick-sighted prudent provident prompt premonish preemptory precautionary precautional perspicacious percipient perched quick-witted qui vive