0 a video of someone reacting to something, especially one posted on social media:
She asked fans to make a reaction video of them watching the last 10 minutes of the season 12 finale.
Watch me scream my lungs out in this new reaction video!
I'd love to see a reaction video of him realizing he's won.
A collection of twenty of the most-viewed YouTube reaction videos was downloaded.
In the reaction video he said, "I think I'm going to cry".
NOVÉ SLOVÁ
European
May 10, 2021
SLOVO DŇA
Shimmer
reaction video