Search Result for "surreptitious": 
Wordnet 3.0

ADJECTIVE (2)

1. marked by quiet and caution and secrecy; taking pains to avoid being observed;
- Example: "a furtive manner"
- Example: "a sneak attack"
- Example: "stealthy footsteps"
- Example: "a surreptitious glance at his watch"
[syn: furtive, sneak(a), sneaky, stealthy, surreptitious]

2. conducted with or marked by hidden aims or methods;
- Example: "clandestine intelligence operations"
- Example: "cloak-and-dagger activities behind enemy lines"
- Example: "hole-and-corner intrigue"
- Example: "secret missions"
- Example: "a secret agent"
- Example: "secret sales of arms"
- Example: "surreptitious mobilization of troops"
- Example: "an undercover investigation"
- Example: "underground resistance"
[syn: clandestine, cloak-and-dagger, hole-and-corner(a), hugger-mugger, hush-hush, secret, surreptitious, undercover, underground]


The Collaborative International Dictionary of English v.0.48:

Surreptitious \Sur`rep*ti"tious\, a. [L. surreptitius, or subreptitius, fr. surripere, subripere, to snatch away, to withdraw privily; sub- under + rapere to snatch. See Sub-, and Ravish.] 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. -- Sur`rep*ti"tious*ly, adv. [1913 Webster]
WordNet (r) 3.0 (2006):

surreptitious adj 1: 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" [syn: furtive, sneak(a), sneaky, stealthy, surreptitious] 2: 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" [syn: clandestine, cloak-and-dagger, hole-and-corner(a), hugger-mugger, hush-hush, secret, surreptitious, undercover, underground]
Moby Thesaurus II by Grady Ward, 1.0:

70 Moby Thesaurus words for "surreptitious": artful, back-door, backstairs, calculating, chiseling, clandestine, collusive, concealed, covert, covinous, crafty, cunning, deceitful, doggo, false, falsehearted, feline, finagling, fraudulent, furtive, guileful, hidden, hidden out, hidlings, hole-and-corner, hugger-mugger, hush-hush, in ambush, in hiding, in the wings, indirect, insidious, lurking, on the sly, on tiptoe, private, privy, prowling, pussyfoot, pussyfooted, quiet, scheming, secret, secretive, sharp, shifty, skulking, slinking, slinky, slippery, sly, sneaking, sneaky, stealing, stealthy, treacherous, trickish, tricky, two-faced, under cover, under-the-counter, under-the-table, undercover, underground, underhand, underhanded, unobtrusive, veiled, waiting concealed, wily
Bouvier's Law Dictionary, Revised 6th Ed (1856):

SURREPTITIOUS. That which is done in a fraudulent stealthy manner.