An archaic or obsolete form meaning to accustom or make someone familiar with something through repeated experience.
From Old French 'acostumer,' which combines 'a-' (to) with 'custom,' ultimately from Latin 'consuetudo' meaning 'habit or established practice'.
This is an old English word that shows how 'accustom' evolved—the extra 'c' was added over time as language simplified, but the core meaning stayed the same, revealing how spelling and pronunciation shift across centuries.
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