When I was younger, I spent some time looking for alternative expletives which could show emotion without sounding like a faux-swear. E.g. "smeg" shares no phonemes in common with any vulgarism in the English language, and I used it for a while, until one day I caught myself about to use it unconsciously instead of on purpose. And I decided I wanted to be the master of my own words, and dropped it in favor us simply using English. "Smeg!" becomes, "What a mess" or "How vexing."
I still say "Argh!" sometimes though, and "Wow."
Hahahahaaaa!!! That is ME laughing at YOU, cruel world.
I could not love thee, dear, so much,
Loved I not Honour more.