An archaic verb meaning to entrust or commit to someone's care; to place confidence or reliance in.
From 'be-' combined with 'trust,' creating a verb meaning to place something in someone's trust. This follows the same pattern as 'betroth' (to promise in marriage) and other 'be-' verbs of commitment.
Medieval contracts and oaths used 'betrust'—'I betrust my child to thy keeping'—and it's more formal than 'trust' because adding 'be-' made verbs feel like solemn, binding actions rather than simple emotions.
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