Instead of "whatever," you can use words like "anything," "whichever," or "whenever," depending on the context. For a more casual tone, "anything goes" might work. In formal situations, "regardless" or "whichever option" can be suitable alternatives.
You can use kind, friendly, or a word that describes exactly how they are nice, such as generous, forgiving, or whatever word(s) apply.
Instead of using the word challenging you can use the word gifted, special, special gifted.
or
Will, when, why, it, can
Myself
I have a stomach ache.
mixture
are
Another word you can use instead of obituary is "death notice" or "memoriam."
Use the word "how" when asking "in what manner". Use the word "why" when asking "for what reason".
use the word job
used to be