WordPress excerpt ellipsis

An ellipsis is the sequence of dots that appears at the end of something that has been truncated. In WordPress, the default ellipsis added to excerpts is surrounded by square brackets: “[…]”. If you don’t like it, you can change it with a filter.

add_filter('excerpt_more', function ($ellipsis) {
    return ' …';
});

You can change it to anything you want, using HTML entities or Unicode characters if you need them.