(adj) engaged in or accustomed to close observation, Syn.watchful, Ant.unalert, Example: caught by a couple of alert cops; alert enough to spot the opportunity when it came; constantly alert and vigilant, like a sentinel on duty
(adj) quick and energetic, Syn.merry, rattling, zippy, spanking, brisk, snappy, lively, Example: a brisk walk in the park; a lively gait; a merry chase; traveling at a rattling rate; a snappy pace; a spanking breeze
(adj) mentally perceptive and responsive, Syn.alive, awake, Example: an alert mind; alert to the problems; alive to what is going on; awake to the dangers of her situation; was now awake to the reality of his predicament
a. [ F. alerte, earlier à l'erte on the watch, fr. It. all' erta on the watch, prop. (standing) on a height, where one can look around; erta a declivity, steep, erto steep, p. p. of ergere, erigere, to erect, raise, L. erigere. See Erect. ] 1. Watchful; vigilant; active in vigilance. [ 1913 Webster ]
2. Brisk; nimble; moving with celerity. [ 1913 Webster ]
n. (Mil.) An alarm from a real or threatened attack; a sudden attack; also, a bugle sound to give warning. “We have had an alert.” Farrow. [ 1913 Webster ]
On the alert, on the lookout or watch against attack or danger; ready to act. [ 1913 Webster ]
แสดงได้ทั้งความหมายของคำเดี่ยว และคำผสม ได้อย่างถูกต้อง
เช่น Secretary of State=รัฐมนตรีต่างประเทศของสหรัฐฯ (ในภาพตัวอย่าง),
High school=โรงเรียนมัธยมปลาย
