Utmost vs upmost…

I will stick with upmost but thanks anyway. Here is the official definitions of both. They are similar enough to be used in either respect and since I used it in my sentence. How would you know what I was hoping it would mean?

I often make mistakes in spelling and punctuation and even plural uses of words leaving of an “s” or a “y”. I hope no one holds it against me. I don’t usually review my posts before sending. I am ok with that and if your not… it will give you something to do I guess. I responded to your correction just to show you that you might want to look it up before you try to correct someone Craigster… funny guy you are…

https://www.merriam-webster.com/words-at-play...difference