act on/upon

phrasal verb

acted on/upon; acting on/upon; acts on/upon

: to use (something, such as a feeling or suggestion) as a reason or basis for doing something

They never acted on the information they had.

It's okay to feel angry or jealous, but you mustn't act on those feelings.

Examples of act on/upon in a Sentence

Recent Examples on the Web

The legal system has not fully caught up yet, leaving a lot of gray areas around what happens when avatars act on someone else's behalf. —Dr. Diane Hamilton, Forbes.com, 3 May 2025

Directed by cult filmmaker Jesús Franco, this film follows the vampire countess Nadine Carody, who seduces her victims with an erotic cabaret act on a Turkish island. —James Factora, Them., 2 May 2025

After a nine-year playing career for the Cubs, Phillies and Rangers, from 1996 to 2004, Glanville has forged a distinguished second act on just about every communications platform. —Tyler Kepner, New York Times, 2 May 2025

The coach is accused of killing him during a lewd act on March 28, and the seventh-grader’s body was found in Ventura County in early April. —James Queally, Los Angeles Times, 1 May 2025