Meanings
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1
noun
formal: the act of adopting, supporting, or becoming committed to a belief, cause, policy, or practice
Her early espousal of prison reform made the issue central to the campaign.
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2
noun
literary or archaic: a betrothal, marriage, or wedding ceremony, especially in the plural espousals
The families announced the espousal after agreeing to the terms of the marriage.
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Etymology
From Middle English espousal and Old French espousailles, from Latin sponsalia ("betrothal"), based on sponsus ("betrothed person, spouse") and spondere ("promise solemnly"). The modern advocacy sense arose through espouse: adopting a cause as though taking it in marriage.