Granted, this question isn’t on everyone’s lips. But many of us need a little spelling help now and then, and discombobulated is one of my favorite words, so why not see how the four contenders might help me out? Cortana was the least helpful, feeding me Bing search results that showed me how to spell the word (plus a Yahoo! Answers result that defined the word). Siri, Google Now and Echo each took the extra step and spelled out the word audibly, too.
Winner (Three-Way Tie): Siri, Google Now, Echo