Echo used hierarchical taxonomies parent name

Try this:

<?php
  $term = get_term_by( 'slug', get_query_var( 'term' ), get_query_var( 'taxonomy' ) );
  $parent = get_term($term->parent, get_query_var('taxonomy') );

  echo $parent->name;
?>

You have to get the current term slug and then use get_term by the slug and then echo the name.

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