[ sur-uhp-tish-uhs-lee ]
See synonyms for surreptitiously on
  1. in a secret or unauthorized way; stealthily: After it surreptitiously installs itself on a user's phone, the spyware program can steal credit card numbers, passwords, and other personal information.

Origin of surreptitiously

First recorded in 1580–90; surreptitious + -ly

Words Nearby surreptitiously Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use surreptitiously in a sentence