1. In a surreptitious manner
   "he was watching her surreptitiously as she waited in the hotel lobby"
   - sneakily, clandestinely

See also: surreptitious

• tupek
• tupelo
• tupelo family
• tupelo tree
• Tupi
• Tupi-Guarani
• Tupi-Guarani language
• tupik
• Tupinambis
• tuple
• tuppence
• tuppenny
• tuppeny
• Tupperware
• Tupungatito
• Tupungato
• tuque
• turaco
• turacou
• turakoo
• turban
• turban squash
• turbaned
• turbary
• Turbatrix