and listen be vigilant be watchful bear in mind eye eyeball follow gaze at have a looksee have regard for hold in mind hold in view keep alert keep in mind keep in view keep under observation keep vigil keep watch look look about one look after look at look lively look on look out look sharp look upon never nod observe qui vive reckon with reconnoiter regard scout spy upon stop take account of take cognizance of take heed of take into account take into consideration take note of take notice of view watch watch out