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love, loyalty, or enthusiasm for a person, activity, or cause:

【人などへの】深い愛情, 献身, 忠誠心 «to»

e.g. his courage and devotion to duty never wavered

e.g. Eleanor's devotion to her husband.

religious worship or observance:

信仰, 信心, 帰依.

e.g. the order's aim was to live a life of devotion.

(devotions) prayers or religious observances.

｟かたく｠ ; 〖～s〗 祈り, 祈禱

Middle English: from Latin devotio(n-), from devovere ‘consecrate’ (see devote).