surreptitiously
In sneaky fashion
Surreptitiously means in a stealthy or secretive manner, especially to avoid notice or detection: She surreptitiously checked her phone during the meeting.
The word implies deliberate concealment—not just quiet, but actively hidden.
Someone who surreptitiously does something doesn't want to be caught doing it.
In a secretive manner
- covertlyDone without detection
- stealthilyIn a covert manner
- quietlyWithout making noise
- silentlyWithout audible noise
undetected · unseen · unnoticed · unobtrusively · inconspicuously · invisibly · unobserved · discreetly
Without others' knowledge
- clandestinelyIn a hidden manner
- confidentiallyIn trusted privacy
- privatelyOut of public view
- hush-hushHighly confidential matter
undisclosed · concealed · hidden · classified · off-the-record · covert · guarded · unrevealed
In furtive manner
- deviouslyIn a scheming way
- underhandedlyIn a dishonest way
- craftilyIn a scheming manner
- cunninglyWith sly cleverness
slyly · duplicitously · deceitfully · treacherously · guilefully · scheming · conniving · insidiously
Covert information gatherer
- undercoverSecretly engaged in espionage
- incognitoWith identity concealed
- infiltrateEnter secretly to observe
- intelligenceMental ability, cognitive capacity
cloak-and-dagger · surveillance · wiretap · eavesdrop · reconnaissance · mole · dead-drop · counterintelligence
furtively
In a secretive manner
- covertlyDone without detection
- stealthilyIn a covert manner
- quietlyWithout making noise
silently · undetected · unseen · unnoticed · unobtrusively · inconspicuously · invisibly · unobserved · discreetly · subtly
secretly
Without others' knowledge
- clandestinelyIn a hidden manner
- confidentiallyIn trusted privacy
- privatelyOut of public view
hush-hush · undisclosed · concealed · hidden · classified · off-the-record · covert · guarded · unrevealed
sneakily
In furtive manner
- deviouslyIn a scheming way
- underhandedlyIn a dishonest way
- craftilyIn a scheming manner
cunningly · slyly · duplicitously · deceitfully · treacherously · guilefully · scheming · conniving · insidiously · artfully
spy
Covert information gatherer
- undercoverSecretly engaged in espionage
- incognitoWith identity concealed
- infiltrateEnter secretly to observe
intelligence · cloak-and-dagger · surveillance · wiretap · eavesdrop · reconnaissance · mole · dead-drop · counterintelligence · tradecraft
- visibilityvisibility, visible, invisible, hidden, hide
surreptitiouslyopenly
Without hiding anything
publicly · overtly · conspicuously · brazenly · blatantly
surreptitiouslytransparently
In an obvious manner
forthrightly · candidly · honestly · above board · straightforwardly
- surreptitious glanceSecret, quick look