invisible ink

noun

: ink that can only be seen when it is specially treated in some way

a message written in invisible ink

Examples of invisible ink in a Sentence

Recent Examples on the Web

These days, most red-letter sins in NCAA sports come in gray, and more often invisible ink. — Fort Worth Star-Telegram, 8 June 2026

One drink opened the chest, two turned fear into courage’s cheap cousin, three steadied the hand enough to write the future in invisible ink. — Brittany Allen, Literary Hub, 19 May 2026

How The Realest, a barely three-year-old start-up, found its way into the inner sanctum of the defending Super Bowl champions is nearly as interesting as its cloak-and-dagger business, complete with proprietary invisible ink placed in a secret spot on select memorabilia by retired police officers. — Dana O’Neil, CNN Money, 11 Jan. 2026

In the middle of 25th St, a man opens a red stanchion and ushers us toward a guard who stamps invisible ink on our wrists. — Kieran Press-Reynolds, Pitchfork, 24 Sep. 2025

Rhymes for invisible ink

• bethink
• downlink
• groupthink
• hoodwink
• rethink
• uplink
• blink
• brink
• chink
• cinque
• clink
• dink