You can think of it as a small signal that the inside matches the outside: what is shown is what is really there, not a polite performance. Speakers reach for it exactly when a listener might reasonably suspect the opposite.
可以想成：genuinely 是在句子裡多加一句「這不是裝的」。說話的人怕你把他的話當成客套或做給人看的表面工夫，就用這個字把裡面和外面對齊——他表現出來的，就是他裡面真有的。也正因為如此，這個字通常出現在「本來有可能是假的」的場合。
原始詞典資料1 筆記錄
以下是外部詞典記錄的用法，摘錄並精簡格式，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
genuinelyadv/ˈd͡ʒɛn.ju.ɪn.li/
- 1
In a genuine manner; truthfully, truly.
- I thought they were joking at first, but it seemed they were genuinely interested in the talk about glaciers.
- This was an emphatic performance and victory, the hosts controlling affairs from pretty much first to last in a display that suggested they are genuinely moving forward once again.
摘錄自 英文維基詞典 English Wiktionary，已精簡格式；依 CC BY-SA 4.0 授權使用，改動後的內容同樣以此授權提供。