Quietly means doing something in a way that makes little or no noise. When you walk quietly down the hallway so you don't disturb your sleeping baby sister, you're moving softly and carefully. When a librarian asks you to speak quietly, she wants you to whisper or use a low voice.

The word also describes doing something without attracting attention or making a fuss. A scientist might quietly work on an important discovery for years before anyone notices. A student who quietly improves their math skills doesn't brag about every problem they solve correctly; they just keep working steadily. When someone quietly helps others, they don't announce their good deeds or expect praise.

Sometimes quietly suggests calm patience rather than dramatic action. Instead of loudly complaining about an unfair rule, you might quietly gather evidence and present a thoughtful argument to change it.

The opposite of doing something quietly is doing it loudly, noisily, or conspicuously. Whether you're trying not to wake someone, showing respect in a serious place, or simply working steadily toward a goal, acting quietly means keeping the volume down and letting your actions speak louder than any announcement.