heedful Synonyms

advertent careful thoughtful attentive scrupulous sleepless solicitous vigilant wakeful ruminant regardful punctual prudent present open-eyed observing observant noticing wary watchful wide-awake on your guard unsleeping unperplexed overprotective on the lookout on guard on the ball all ears cagey leery beady-eyed on the qui vive sharp-eyed paying attention unadventurous noncommittal mindful meticulous conscientious concerned concentrating concentrated cognizant circumspective circumspect chary cautious cautelous canny