Showing NON featured posts but skipping the feature ones

I have managed to get the featured posts showing great but I thought by setting the boolean to false it would then show all the non-featured posts :confused:

Any pointers would be great, thanks :slight_smile:

This is my code snippet:

<ul class="latest">

      <?php $articles = page('articles')->children()->visible()->filter(function ($child) {
              return $child->featured()->bool(false);
            foreach($articles as $article): ?>

      <li data-aos="fade-up">
        <div class="imgcontainer">
          <img src="<?= $article->featuredimage()->toFile()->url() ?>" alt="<?= $article->title() ?>">
        <div class="article">
          <h4><a href="<?php echo $article->url() ?>" class="title-link">
              <?php echo $article->title()->html() ?></a></h4>
            <?php echo $article->text()->excerpt(200) ?>
          <p class="button"><a href="<?php echo $article->url() ?>" class="readmore button">Full article</a></p>

      <?php endforeach ?>
 return !$child->featured()->bool();


 return $child->featured()->isFalse();

Of course! What a plonker I am - Thank you @texnixe! :smiley: