<.< Well, let's try the letter 'F'! At this point it would be very helpful if you listed the guessed letters, by the way.
Are you certain it's an English word? When I selected random word from the English wiktionary, I got https://en.wiktionary.org/wiki/обмерший which most certainly is not English.
Guessed Letters.. O E G I S T A R F L U N C I think 3 correct letters in a row for this word is the record.. I'm sure someone will get the word now.