根据题意，这个单词应该是redamancy。
redamancy n. <罕>回报爱的行为
＂是一个已经不再被人使用的词,字典上称＂deadword＂。它简单地代表“爱”,但不同于其它代表爱的词,它强调爱的“相互作用”。
扩展资料：
Redamancy
The act of loving the ones who love you;a love returned in full.
字面意思，对爱你的全身心地回馈你的爱。本词传递的浪漫之情，估计用中文表达起来，得到“山无棱，天地合，乃敢与君绝！”的程度。
e.g. It was redamancy. It was heaven. It was peace. It was more than he could have ever hoped for or wanted.
Their mutual redamancy would trump all challenges that befell them.
