Definitions

truth serum

[trooth seer-uhm] / ˈtruθ ˌsɪər əm /

NOUN

truth drug

Synonyms

WEAK

Pentothal scopolamine sodium pentothal thiopental sodium

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

As the YouTube hit demonstrates, hot sauce isn’t just for daredevils and masochists: It’s a truth serum.

From The Wall Street Journal • Nov. 20, 2025

The playfulness kicks in when George and Kathryn invite the other suspects over for a dinner spiced with garlic and truth serum.

From Los Angeles Times • Mar. 13, 2025

“If opening day was today, he would certainly be running out there in center, which I know he loves. I think if you put truth serum in him, that’s what he’d want to do, regardless.”

From Seattle Times • Dec. 7, 2023

And so, in the real world, one submits to these devices nervously, as one would to some kind of truth serum or all-seeing eye: There is no hiding here.

From New York Times • Aug. 2, 2023

I don’t need to search myself for my deepest, darkest secrets to know that truth serum is the last thing.

From "Insurgent" by Veronica Roth