Stealth mode

American Slang

Definition

Operating in secrecy—keeping a project or company under wraps and off the radar until it’s ready to be revealed.

Examples

"The founders kept the app in stealth mode for a year, quietly testing features before the big reveal."

"We’re staying in stealth mode until our funding closes, so please don’t post anything about the product yet."

"Rumor has it the new AI startup is in stealth mode, recruiting engineers under the radar while they polish the prototype."