have a care

be alert be careful be on guard beware check out heads up hearken keep an eye out keep tabs listen mind notice pay attention peg pick up on scope shotgun size up spot spy watch out

disregard ignore neglect

tend

trouble watch

be cautious be concerned be on guard be solicitous be wary mind one's p's and q's take care toe the line watch one's step watch out

disregard forget ignore neglect