up to

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Adjective up to has 2 senses

up to - busy or occupied with; "what have you been up to?"; "up to no good"
Antonym: idle (indirect, via busy)
adequate to, capable, equal to, up to - having the requisite qualities for; "equal to the task"; "the work isn't up to the standard I require"
Antonym: inadequate (indirect, via adequate)

up on predicate up predicate up quark up scale up set up the creek up the stairs up tight up to up to date up to date up to her neck up to his neck up to my ears up to my neck up to now up to our necks

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