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to behave in a childish or unreasonable manner
to be/become crazy or confused
to start behaving in a strange or silly way
to start behaving in a way that is not sensible or reasonable
to become crazy because you are so bored, upset etc
to be slightly crazy
to be becoming silly or slightly crazy
to seem to be crazy or to be doing stupid things
to become crazy
a start-up … whose value has reached more than one billion US dollars
a small bird with long legs that lives near water
an afternoon full of crafts
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Free thesaurus definition of to be or to become crazy or stupid from the Macmillan English Dictionary - a free English dictionary online with thesaurus and with pronunciation from Macmillan Publishers Limited.