Lucky first guess.
I got the letter everyone else had trouble finding, and eliminated most of the other words that would have had it in the wrong position at the same time.
STARE PATIN (let's think of a word with useful letters, like P, or N, and a vowel, reusing the letters I already found. Something obscure and from a foreign language would be perfect) PAINT
So as the wife and I were going to bed last night, someone in the neighborhood started practicing their trumpet. The sad trumpet version of The Imperial March might be funnier than Sad Trombone.
I had a feeling it was going to be a double letter after my second guess, and I suspected a L after the third, but wanted to work some other letters in first before jumping straight to it, just in case.