interpenetrate

Verb

• spread or diffuse through
  • An atmosphere of distrust has permeated this administration
    
  • music penetrated the entire building
    
  • His campaign was riddled with accusations and personal attacks
    

• penetrate mutually or be interlocked
  • The territories of two married people interpenetrate a lot
    

Related words

• Synonyms: 
  permeate , pervade , penetrate , diffuse , imbue , riddle