Reiteration means saying or doing something again, often to make sure people understand or remember it. When your teacher explains the rules for a field trip, then repeats them before you leave, that second explanation is a reiteration. The word emphasizes the deliberate choice to repeat something important.

You might reiterate your main point at the end of a presentation so your audience remembers it clearly. A coach might reiterate the team's strategy during halftime. Parents sometimes reiterate their expectations about homework or chores, not because they enjoy repeating themselves, but because the message matters.

Reiteration isn't mindless repetition: it's purposeful. When someone reiterates something, they believe it deserves to be said again. A scientist might reiterate her findings to emphasize their importance. A friend might reiterate her support during a difficult time, saying “I'm here for you” more than once because the words carry weight.

Reiteration helps important ideas stick. Sometimes hearing something once isn't enough. The second time around, the message lands differently, clearer and stronger.