surreptitious /sur-əp-tishˈəs/

1. Done by stealth or fraud
2. Stealthy

surreptiˈtiously adverb

• cachalots
• cachaça
• cachaças
• cache
• CACHE
• cache controller
• cachectic
• cachectical
• cached
• cache memory
• cachepot
• cachepots
• caches
• cache-sexe
• cachet
• cachets
• cachexia
• cachexias
• cachexies
• cachexy
• caching
• cachinnate
• cachinnated
• cachinnates
• cachinnating