In some cases you might have a long description that you would like shown in your hits. You can customize the output of the Hit widget so that the whole description is shown. Here's a React InstantSearch CodeSandBox with a customizable Hit component being passed to the Hit Widget. If you are using vanilla Javascript this CodeSandbox achieves the same goal with a customizable item template.
You can customize the UI of the Hits widget even further by using the widgets connector. If you are using attributesToSnippet you can increase the number of words in the snippet by changing the nbWords parameter. This guide is an excellent resource should you choose to use Snippeting but if your goal is not to restrict an attribute's character length you may be better served by not Snippeting the attribute.