Longevity (n.) - long life
Long life, in long-evity. I also see the word eternity in longevity.

Malignant (adj.) - harmful, causing harm or suffering. Malignant cancers can spread into large and crucial organs, thus it is dangerous and harmful.
Mandate (n.) - command that is ordered through authority. Mandate has the word "man" and "date" in it, which can be interpreted to be like a man serving or ordered to do something in the specific time or date.

Mundane (adj.) - ordinary, banal. I see the word Sundae in Mundane, which are usually very tasty and delicious. However, changing "S" to "M" makes it boring, also that fact that Mundane sounds like Monday.
Nefarious (adj.) - wicked and immoral. The first time I saw this word was at Dictionary.com's Word of the Day, and I have remembered it ever since. Also, it reminds me of the word infamous, for they have similar definitions and the a game I like called Infamous.
Nepotism (n.) - showing favoritism to a relative in order to bring them into power, especially in jobs. Ism makes the word sound like a practice of some sort, and Nepo sounds like Necro, or having to do with death. Due to the fact that it is not Necro, but Nepo, it makes the word sounds lively and happy with the family. Playing Favorites: TIMES Article
Nonchalant (adj.) - calm, casual, not caring.
Whatever chalant means, it sounds Frenchy and super sophisticated, in pronunciation and in French culture, thus, non-sophisticated-and-Frenchy-chalant means not complicated and calm, simple.



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