outbreak
noun
[ ˈaʊtbreɪk ]
• a sudden occurrence of something unwelcome, such as war or disease.
• "the outbreak of World War II"
Similar:
eruption,
flare-up,
upsurge,
outburst,
epidemic,
breakout,
sudden appearance,
rash,
wave,
spate,
flood,
explosion,
burst,
blaze,
flurry,
recrudescence,
ebullition,
boutade,
start,
beginning,
onset,
breaking out,
opening,
outset,
day one,
inception,
dawn,
genesis,
commencement,