Interesting. 'sm' words in English often have negative or derogative connotations:
Smut Smack Smug Small Smarm Smash Smatter Smear Smeg Smell Smirch Smit Smite Smithereens Smog Smother Smudge I would advise against 'sm' words for that reason. Other thoughts: intermixable.org overmix.org mixible.org premixed.org Terry