C2 adjective ˌsʌr.əpˈtɪʃ.əs
surreptitious
गुप्त
Meaning
Kept secret, especially because it would not be approved of; done stealthily.
Example
She took a surreptitious glance at his notes.
उसने उसकी नोट्स पर चुपके से एक नज़र डाली।