He writes a plain and unadorned style and shuns superfluous words.
Outsiders may feel they are missing out on a lot when a group shuns them.
The culture follows strict rules on lifestyle, appearance and behavior that adheres to a very simple and old-fashioned existence that shuns modern technology and luxuries.
Likewise, if your partner is unconventional and shuns traditions, your getting down onto one knee may not be the best way to propose.
Since your gluten-free bread recipe shuns gluten-containing ingredients, you want to make sure your supplemental fiber follows suit.