watch·ful

[woch-fuhl]
adjective
1.
vigilant or alert; closely observant: The sentry remained watchful throughout the night.
2.
Archaic. wakeful.

Origin:
1540–50; watch + -ful

watch·ful·ly, adverb
watch·ful·ness, noun
self-watch·ful·ness, noun
un·watch·ful, adjective
un·watch·ful·ly, adverb
un·watch·ful·ness, noun


1. attentive, heedful, careful, circumspect, cautious, wary. See alert.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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00:10
Watchful is always a great word to know.
So is doohickey. Does it mean:
a gadget; dingus; thingumbob.
an extraordinary or unusual thing, person, or event; an exceptional example or instance.
Collins
World English Dictionary
watchful (ˈwɒtʃfʊl) [Click for IPA pronunciation guide]
 
adj
1.  vigilant or alert
2.  archaic not sleeping
 
'watchfully
 
adv
 
'watchfulness
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Example sentences
We use an expensive machine rather than watchful waiting.
At the same time, nature has ways of surprising us, and it pays to be watchful.
Companies needed to have powerful shareholders and independent directors to
  keep a watchful eye on managers.
The three sports that have been under their watchful eye since the report's
  inception continue to post higher marks every year.
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