• WordNet 3.6
    • adj surreptitious conducted with or marked by hidden aims or methods "clandestine intelligence operations","cloak-and-dagger activities behind enemy lines","hole-and-corner intrigue","secret missions","a secret agent","secret sales of arms","surreptitious mobilization of troops","an undercover investigation","underground resistance"
    • adj surreptitious marked by quiet and caution and secrecy; taking pains to avoid being observed "a furtive manner","a sneak attack","stealthy footsteps","a surreptitious glance at his watch"
    • ***
Webster's Revised Unabridged Dictionary
    • a Surreptitious Done or made by stealth, or without proper authority; made or introduced fraudulently; clandestine; stealthy; as, a surreptitious passage in an old manuscript; a surreptitious removal of goods.
    • ***
Century Dictionary and Cyclopedia
    • surreptitious Done by stealth, or without legitimate authority; made or produced fraudulently; characterized by concealment or underhand dealing; clandestine.
    • surreptitious Acting in a crafty or stealthy way; guilty of appropriating secretly.
    • ***
Chambers's Twentieth Century Dictionary
    • adj Surreptitious sur-rep-tish′us done by stealth or fraud
    • ***


Webster's Revised Unabridged Dictionary
L. surreptitius, or subreptitius, fr. surripere, subripere, to snatch away, to withdraw privily; sub-, under + rapere, to snatch. See Sub-, and Ravish
Chambers's Twentieth Century Dictionary
L., from surripĕre, surreptumsub, under, rapĕre, to seize.


In literature:

They acted simply as a screen, through the cracks of which we might surreptitiously gaze.
"The Fifth Wheel" by Olive Higgins Prouty
Her glance to it was very swift and surreptitious, and she spoke, to cover it perhaps.
"The Way of Ambition" by Robert Hichens
I cannot allow that anything should be put into my room surreptitiously.
"Can You Forgive Her?" by Anthony Trollope
Now for a surreptitious peep at the end of the lesson.
"Essays on Scandinavian Literature" by Hjalmar Hjorth Boyesen
Turkey Evans had brought the last strip of an old rag carpet he had taken surreptitiously from an unused room of his home.
"Watch Yourself Go By" by Al. G. Field
I'm persuaded they're playing some deep and surreptitious game at present.
"For the Sake of the School" by Angela Brazil
Strong was alone in the office, surreptitiously picking his teeth.
"The Promised Land" by Mary Antin
Finally an arithmetical problem on the board caught my eye, and was surreptitiously transferred to my note-book for future reference.
"A Woman's Journey through the Philippines" by Florence Kimball Russel
Such was the party which assembled surreptitiously in Tom's study that evening and partook of the smuggled supper.
"The Adventures of a Three-Guinea Watch" by Talbot Baines Reed
Claire withdrew her hand, and surreptitiously rubbed it against her skirt.
"The Independence of Claire" by Mrs. George de Horne Vaizey

In poetry:

My husband was Perfidious,
He was Perfidious
Five Romans.
Surreptitious, our son,
Was Surreptitious,
He was six Romans.
"Tenuous and Precarious" by Stevie Smith
Old Father Time, one day
In his study, so they say,
Was indulging in a surreptitious nap,
When from his drowsy dreams
He was wakened, as it seems,
By a timid but persistent little rap.
"A Valuable Gift" by Carolyn Wells
From thy observant orbit in the skies,
Did'st thou behold that sacrilegious tower,
Which reared its massive form on Babel's plain,
Built by misguided and presumptuous men,
In vain and ineffectual attempt
To scale the heavens surreptitiously?
"Metabole." by Alfred Castner King

In news:

Each machine has been surreptitiously infected by the bot herder with a bot , a remotely controlled piece of malicious software.
I understand this will go into effect on December 31, 2009, surreptitiously taking away our right to buy nutrition.
Will Mitt Romney's campaign be damaged by the surreptitiously recorded video that surfaced Monday.
Early last week, Android developer Trevor Eckhart published a video, alleging that Carrier IQ – which services Sprint, RIM, and HTC, among others – was surreptitiously logging the keystrokes of mobile users.
Christian Turcios, 26, was arrested Monday on suspicion of 10 counts of sexual exploitation of a minor, along with child molestation and unlawful surreptitious video recording counts, according to police.
Slow, stark and sometimes surreptitiously beautiful, Michael Haneke's "The White Ribbon " is as cold and clinical an examination of evil as you could imagine.
Denver's Civil Service Commission has reinstated the suspensions of two police officers who surreptitiously taped a superior, overturning a hearing officer's ruling that reduced their penalties.
The suit stems from a 2008 video surreptitiously shot by an activist posing as a worker.
Surreptitious genome sequencing could come from discarded coffee cups.
These persuasive two-minute presentations are most handy when you surreptitiously find yourself one-on-one with a VIP prospect who never would have invited you into his office to make a full presentation.
In the taping case, former Safety Manager Charles Garcia suspended Sgt Brian O'Neill for 30 days without pay for surreptitiously filming Cmdr.
Allowed the big guy to have sex with his (now former) wife and somebody surreptitiously taped the entire un-sexy encounter.
Under "surreptitious" in the dictionary, see us.
In fact, the only known image of Baldwin is a student's surreptitious sketch of her praying, with Midget perched atop her bustle.
The Software Principles Yielding Better Levels of Consumer Knowledge Act, also known as the Spy Block Act (S 2145), would outlaw all surreptitious installation of software except cookies and require uninstall procedures for approved software.

In science:

The eavesdropper’s attempt to surreptitiously come into alignment with the sender’s predictability is always shunted away from its goal.
Information Tradeoff Relations for Finite-Strength Quantum Measurements
The detailed considerations begin when Alice tries to surreptitiously increase her “knowledge” of the system—that is, to obtain a new density operator that is closer to being a pure state than her initial ascription.
Information Tradeoff Relations for Finite-Strength Quantum Measurements
Let us now start applying these distinctions of measurement to the problem at hand—namely, to that of an Alice trying to surreptitiously increase her “knowledge” of a system while affecting Bob’s “knowledge” of it as little as possible.
Information Tradeoff Relations for Finite-Strength Quantum Measurements
Now the stability of Weyl points can be connected to Gauss’s law: a Gaussian surface surrounding the Weyl point detects its charge, preventing it from disappearing surreptitiously.
Beyond Band Insulators: Topology of Semi-metals and Interacting Phases