What is a disaster?

dis·as·ter

noun: disaster; plural noun: disasters
a sudden event, such as an accident or a natural catastrophe, that causes great damage or loss of life.
"159 people died in the disaster"
synonyms: catastrophe, calamity, cataclysm, tragedy, act of God, holocaust; More

antonyms: blessing
denoting a genre of films that use natural or accidental catastrophe as the mainspring of plot and setting.
modifier noun: disaster
"a disaster movie"
an event or fact that has unfortunate consequences.
"a string of personal disasters"

INFORMAL
a person, act, or thing that is a failure.
"my perm is a total disaster"
synonyms: failure, fiasco, catastrophe, mess, debacle; More

antonyms: success

Phrases
be a recipe for disaster — be extremely likely to have unfortunate consequences.
"sky-high interest rates are a recipe for disaster"

Origin
mid 16th century: from Italian disastro ‘ill-starred event’, from dis- (expressing negation) + astro ‘star’ (from Latin astrum ).

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