biweekly

Adjective

• occurring twice a week

• occurring every two weeks

Adverb

• every two weeks
  • he visited his cousins fortnightly
    

• twice a week
  • he called home semiweekly
    

Noun

• a periodical that is published twice a week or every two weeks (either 104 or 26 issues per year)

Related words

• Synonyms: 
  semiweekly , fortnightly