Filter Hook – user_profile_user_gender

You can add your own gender string by filter hook as following

function user_profile_user_gender($gender){
  
                
  $gender['new_gender'] = array(
                'title'=>__('New gender', USER_PROFILE_TEXTDOMAIN),
                'icon'=>'<i class="fa fa-female" aria-hidden="true"></i>',
                );	
      
  
  return $gender;
  
  }
  
add_filter('user_profile_user_gender','user_profile_user_gender');