Definition of outbreak
- the outbreak of war
- an outbreak of measles
- an outbreak of locusts
there was an immediate outbreak of paper shuffling and a pretense of work when the supervisor passed through the room
the government quelled the outbreak with ruthless efficiency
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'outbreak.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
: a sudden start or increase of fighting or disease
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