If you do something secretively, you do it in a way that is secret or hidden from others.
Doing something secretively can make people think you are doing something sneaky or not honest.
Examples:
She looked around secretively before opening the present.
He secretively took the cookie when no one was looking.
The cat ate the fish secretively.
The squirrel secretively buried the nut in the garden.
The spy secretively passed the message to his partner.
She secretively whispered the plan to her friend.