To distrust or lose confidence in someone or something; to doubt or suspect with suspicion.
From Latin 'diffidere,' combining 'dis-' (not) and 'fidere' (to trust), literally meaning to not trust. This is opposite to 'confide' (from 'con-' and 'fidere').
Though nearly obsolete, 'diffide' and 'confide' are perfect opposites—one means to trust completely, the other to withhold trust entirely, both sharing the Latin root 'fidere' (faith).
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