sneakier
Harder to detect
Sneakier is the comparative form of sneaky—more secretive, more underhanded, more given to acting by stealth.
The raccoons got sneakier after we installed the first lock on the trash can.
She's sneakier than her brother about breaking curfew.
stealthy
More subdued in volume
- stealthierMore covert in movement
- ghostlierComparative of supernatural paleness
cunning
More sly and scheming
quieter
More subdued in volume
- stealthierMore covert in movement
- ghostlierComparative of supernatural paleness
craftier
More sly and scheming
shiftier
More deceitful in manner
- sneaking outDeparting covertly, undetected
- sneaking aroundMoving secretly, furtively
- sneaking suspicionVague persistent doubt
- sneaking inCovert unauthorized entry
- sneaking offDeparting undetected