Surreptitiously(adverb)
Meaning: Secretly, without anyone seeing or knowing.
Hindi meaning:चुपके; गुप्त रूप से
Synonyms: Stealthily, Sneakily, Slyly, Clandestinely
Antonyms: Openly, Overtly, Publicly, Plainly
Example: Joe surreptitiously had a look in the answer book.
Trick to remember: Table tenis(tt) par surreptitiously command karke usne sabko surprise kar diya 
