Watchful

1.

(Watching, alert, vigilant) ដែលប្រយ័ត្នប្រយែង, ដែលមិនធ្វេសប្រហែស, ដែលយកចិត្ដទុកដាក់
Example: A watchful detective, be watchful of one's step.

2.

(បច្ចេកទេស) ដែលប្រុងប្រយ័ត្ន

1.

Full of watch; vigilant; attentive; careful to observe closely; observant; cautious; -- with of before the thing to be regulated or guarded; as, to be watchful of one's behavior; and with against before the thing to be avoided; as, to be watchful against the growth of vicious habits.