watchful

[ woch-fuhl ]
/ ˈwɒtʃ fəl /

adjective

vigilant or alert; closely observant: The sentry remained watchful throughout the night.
Archaic. wakeful.

Origin of watchful

First recorded in 1540–50; watch + -ful

Related forms

Synonym study

1. See alert.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for watchful

British Dictionary definitions for watchful

watchful

/ (ˈwɒtʃfʊl) /

adjective

vigilant or alert
archaic not sleeping

Derived Forms

watchfully, adverbwatchfulness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012