surreptitious /sur-əp-tishˈəs/

1. Done by stealth or fraud
2. Stealthy

surreptiˈtiously adverb

• break fees
• break forth
• break free
• break fresh ground
• break-front
• break-fronts
• break gaol
• break gates
• break ground
• break in
• break-in
• breaking
• breaking and entering
• breaking point
• breaking points
• breakings
• breaking stress
• break in on
• break-ins
• break into
• break it down
• break jail
• break-jaw
• break loose
• breakneck