Antonym: careless, incautious. Similar words: reproachful, catch fire, watch, watchdog, watch over, watch out for, overwatch, bashful. Meaning: ['wɑtʃfʊl /'wɒ-] 
adj. 1. carefully observant or attentive; on the lookout for possible danger 2. experiencing or accompanied by sleeplessness.
adj. 1. carefully observant or attentive; on the lookout for possible danger 2. experiencing or accompanied by sleeplessness. 
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1 The entrances are guarded by watchful security staff.
2 Her expression was watchful and alert.
3 His mother kept a watchful eye on him.
4 His eyes were watchful .
5 We keep a watchful eye on our elderly neighbors.
6 Keep a watchful eye on elderly residents.
7 Under the watchful eye of their mother, the two boys played on the shore.
8 She keeps a watchful eye on her husband to see that he behaves himself.
9 The children played under the watchful eye of their teacher.
10 Off-screen, Kathy is under the watchful eye of her father Terry.
11 The best thing is to be watchful and see the family doctor for any change in your normal health.
12 Learn the basics under the watchful eye of a qualified instructor.
13 He first learnt to fish under the watchful eye of his grandmother.
14 We went to dances, but only under the watchful eye of our father.
15 The thing is to be watchful even when you think your child is safe.
16 The children played under the watchful eye of their father.
17 The eyes behind the lenses were watchful and wary.
18 Then he saw the watchful, ruthless, dissatisfied eyes.
19 Ever watchful - my guardian angel.
20 Self-assured as ever, Abdullah's watchful eyes moved warily, arrogantly.
21 His eyes were watchful, unfriendly.
22 Christians are under obligation to be constantly watchful on this point.
23 For all his bold chivalry this watchful Celt seems surely to have strayed from a wayside pulpit.
24 They act out roles and techniques under the watchful eye of their instructors.
25 Note that while the dog's body remains still it is none the less alert and watchful, awaiting further instructions from its owner.
26 Russell happened to be in the office and sounded watchful when Dexter explained why Blanche wanted a word with him.
27 She booked them for clubs, special appearances, and kept a watchful eye on the money, and soon, Holly.
28 Distressed by mindless vandalism that destroys trees and flowers they are keeping a watchful eye on plant life.
29 It was as if the Holy Spirit had taken his hands off and was standing back, observing,[www.Sentencedict.com] watchful.
30 Even in peace time, the government has always kept a watchful eye on U.S.
More similar words: reproachful, catch fire, watch, watchdog, watch over, watch out for, overwatch, bashful, faithful, truthful, slothful, match, batch, patch, latch, catch, unfaithful, thatch, patchy, snatch, catcher, scratch, catches, hatchet, catch on, catch-all, satchel, truthfulness, dispatch, matching.