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

Though occasionally used in court, forensic hypnosis was no truth serum.

From Los Angeles Times • Apr. 24, 2023

And if Carroll was given a dose of truth serum, the hunch here is he would acknowledge this as his most satisfying season in Seattle.

From Seattle Times • Jan. 9, 2023

But you know, if you really have me under truth serum and say, you know, how confident am I?

From New York Times • Dec. 10, 2021

They are going to inject me with outer space truth serum.

From "Please Ignore Vera Dietz" by A.S. King