Siri Knows When She is Unsure

Using Siri dictation is one of the best iOS experiences I have ever had. It's clear, concise and by far the best speech-to-text service that ever existed on a mobile platform. This feature just makes it even better

If Siri isn't sure of a word within a speech-to-text translated sequence, it will underline it in purple, giving you it's second and possibly third guesses.