The opposite of 'peremptory', which describes a brusquely authoritarian or dictatorial way of behaving, is Deferential. While 'humble' and 'resistant' can sometimes be related to its opposite, they do not capture the full essence, as 'deferential' specifically implies showing respect and yielding to others, which directly contrasts with the imposing nature of peremptory. 'Weak' is not a direct opposite as it relates to a lack of strength, whereas 'peremptory' describes a manner of authority.
The opposite of 'Peremptory' is
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