Definition of observant
- an observant spectator
A particularly observant child, he noticed even the slightest changes in the classroom.
Good reporters are keenly observant of everything around them.
The family is strictly observant.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'observant.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
on guard, on one's toes, on the alert, on the ball, on tiptoe;
: good at watching and listening : good at noticing what is going on around you
: careful to follow religious teachings or customs
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