Timely means happening at exactly the right moment or arriving just when needed. When a firefighter makes a timely rescue, they reach someone before it's too late. When you submit your homework in a timely manner, you turn it in on time or even early, showing responsibility and good planning.

The word suggests perfect timing that makes a real difference. A timely reminder from your friend helps you remember something important before you forget. A timely suggestion from your teacher might solve a problem you were struggling with. Rain that falls during a drought is timely because it arrives precisely when farmers need it most.

Doctors talk about timely treatment, meaning care that happens quickly enough to help patients recover. In newspapers, you might see the phrase “a timely article,” meaning one that addresses something people are thinking about right now, not last year or next decade.

The opposite would be arriving too late to matter, like remembering your friend's birthday party three days after it happened. Timely actions show you're paying attention, planning ahead, and understanding when something truly needs to happen.

As an adverb, timely can also mean “at the right time,” as in “They arrived timely.”