impenetrable /im-penˈi-trə-bl/

1. Incapable of being penetrated
2. Impervious
3. Inscrutable
4. Occupying space exclusively (physics)

• standees
• standen
• stander
• stander-by
• standers
• standers-by
• stand fair with
• stand fast
• stand fire
• stand first
• stand firsts
• stand for
• stand from
• standgale
• standgales
• stand good
• stand guard
• stand in
• stand-in
• standing
• standing bed
• standing beds
• standing committee
• standing committees
• standing crop