I was quizzing Isabella again (see this post) - trying to get her to pronounce big words. She perfectly said:
Then she turns to me and asks, "Can you say 'phenomenon'?"
LOL (and I almost woke up Simon - who crammed his finger so far up my nose when I was rocking him to sleep that my nose bled a little)
But one word that I did find that she has difficulty with is 'crooked'. She says 'crooquid'.
It is very cute.