What is the most unusual word from this list?By far the most strange word in this list is 'yesteryear'. According to the Oxford dictionary, 'yesteryear' means "The year last past; last year.".
What is the longest word you can construct from the combination of letters specified?The longest word is 11 characters, which is 'yesteryears'.
How many viable words can you put together using the specified combination?It's possible to assemble 2 words with the combination you asked for.