https://www.cnet.com/news/star-wars-the-last-jedi-first-word-spoiler-rian-johnson-jimmy-kimmel/

After joking that "your Jedi mind tricks will not work on me," the director agreed that he could reveal the film's first word.

"I can do this, this I can do," Johnson said. "It's we're, W-E-apostrophe-R-E. It's huge!"