Б — ба бд бе би бл бо бр бу бы бю
бдение — vigil, all-nighter, wake, watch, wakefulness;
бдительно — vigilantly, watchfully, alertly, attentively, warily, cautiously, on the alert, vigilant, alert, watchful;
бдительность — vigilance, watchfulness, alertness, wariness;
бдительный — vigilant, watchful, alert, attentive, cautious, on the lookout, observant, wary, hawk-eyed;