Learn how to say Espousal correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word espousal:
1 [in singular] an act of adopting or supporting a cause, belief, or way of life:
his espousal of Western ideas
2 archaic a marriage or engagement.
late Middle English: from Old French espousaille, from Latin sponsalia ‘betrothal’, neuter plural of sponsalis (adjective), from sponsare ‘espouse, betroth’ (see espouse)