What Does Groot Say in Infinity War

Whoa! Language!

When the Guardians receive a distress call, teenage Groot is too preocupied with his handheld device.

Peter Quill: Groot, put that thing away. Now. I don’t want to tell you again. Groot?
Groot: I am Groot.
Peter Quill: Whoa! Language!

I am Steve Rogers

During the battle at Wakanda, Thor is reunited with Steve Rogers. He introduces Groot as Tree. Steve Rogers assuming that Groot was introducing himself, offered his own name.
Thor: Oh, by the way, this is a friend of mine. Tree.
Groot: I am Groot.
Captain America: I am Steve Rogers.

The Thanos Snap

When Thanos collected all of the Infinity Stones, Groot was one of the heros to disapear following the Snap. Rocket Racoon called helplessly as Groot faded away.
Groot: I… am… Groot…
Rocket Raccoon: No, Groot… no, no, no, no! Oh… Groot. No…

What Does Groot Say in Infinity War