/ ˌdɪsəˈpɪə(r); NAmE -ˈpɪr/ verb [ v ]
1.
[often + adv. / prep. ] to become impossible to see
SYN vanish :
The plane disappeared behind a cloud.
Lisa watched until the train disappeared from view .
2.
to stop existing
SYN vanish :
Her nervousness quickly disappeared once she was on stage.
The problem won't just disappear.
Our countryside is disappearing at an alarming rate.
3.
to be lost or impossible to find
SYN vanish :
I can never find a pen in this house. They disappear as soon as I buy them.
The child disappeared from his home some time after four.
► dis·ap·pear·ance / -ˈpɪərəns; NAmE -ˈpɪr-/ noun [ U , C ]:
the disappearance of many species of plants and animals from our planet
Police are investigating the disappearance of a young woman.
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IDIOMS
see act noun , face noun
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WORD ORIGIN
late Middle English : from dis- (expressing reversal) + appear , on the pattern of French disparaître .