"No lie!"

SCOUTSHONOR

A Boy Scout’s solemn pledge might start with these two words when swearing truthfulness.

The phrase "No lie!" is a casual way to swear you're telling the truth, much like the Boy Scouts' oath "Scout's honor." The answer plays on that idea by combining "scout" with "honor" into one word, turning a common expression into a punny, compact response. It’s a straightforward cultural reference—anyone familiar with the Boy Scouts or the phrase will recognize the wordplay instantly.