A gigantic thing or person is extremely big or impressive. Imagine seeing a huge skyscraper towering over the city.
The word "gigantic" is often used to describe something that's enormous, like a massive mountain range or a record-breaking sports stadium. You might also use it to describe someone who's incredibly talented or accomplished, like a gigantic movie star. Even if you're just talking about something ordinary, you can add a touch of excitement by saying it's "gigantic" – for example, "This cake is gigantic!" would mean it's extremely large and impressive.
Very large.
