Antonyms of adj up_to

2 senses of up to

Sense 1
up to -- (busy or occupied with; "what have you been up to?"; "up to no good")

INDIRECT (VIA busy) -> idle -- (not in action or at work; "an idle laborer"; "idle drifters"; "the idle rich"; "an idle mind")

Sense 2
adequate to (predicate), capable, equal to (predicate), up to (predicate) -- (having the requisite qualities for; "equal to the task"; "the work isn't up to the standard I require")

INDIRECT (VIA adequate) -> inadequate, unequal -- (lacking the requisite qualities or resources to meet a task; "inadequate training"; "the staff was inadequate"; "she was unequal to the task")

Similarity of adj up_to

2 senses of up to

Sense 1
up to -- (busy or occupied with; "what have you been up to?"; "up to no good")
       => busy (vs. idle) -- (actively or fully engaged or occupied; "busy with her work"; "a busy man"; "too busy to eat lunch")

Sense 2
adequate to (predicate), capable, equal to (predicate), up to (predicate) -- (having the requisite qualities for; "equal to the task"; "the work isn't up to the standard I require")
       => adequate (vs. inadequate), equal -- (having the requisite qualities or resources to meet a task; "she had adequate training"; "her training was adequate"; "she was adequate to the job"; "he was equal to the task")