secretively
In a sneaky, hidden way so others do not notice.
Secretively means doing something in a hidden or sneaky way, keeping your actions concealed from others. When you act secretively, you're trying to make sure no one notices what you're doing or finds out about it.
Picture a student working secretively on a surprise birthday card for their teacher, carefully hiding it whenever someone walks by. Or imagine someone glancing around nervously before secretively slipping a note into a friend's locker. The word describes both the hidden action and the cautious, careful manner of doing it.
Secretively isn't always bad. You might work secretively on a gift to preserve a wonderful surprise. But the word often carries a slightly suspicious feeling, suggesting there might be a reason someone doesn't want to be seen. If your brother is secretively eating cookies before dinner or a classmate is secretively looking at their phone during a quiz, they're probably doing something they shouldn't.
The key difference between doing something privately and doing it secretively is the sneakiness. Privacy is normal and healthy. Secretiveness suggests hiding, concealment, and often a touch of guilt about what you're up to.