surreptitious /sur-əp-tishˈəs/

1. Done by stealth or fraud
2. Stealthy

surreptiˈtiously adverb

• snip-snapping
• snip-snaps
• snip-snap-snorum
• snipt taffeta fellow
• snipt taffeta fellows
• snipy
• snirt
• snirtle
• snirtled
• snirtles
• snirtling
• snirts
• snit
• snitch
• snitched
• snitcher
• snitchers
• snitches
• snitching
• snits
• snivel
• sniveled
• snivelled
• sniveller
• snivellers