fortnightly

fortnight +‎ -ly

fortnightly (plural fortnightlies)

1. a publication issued fortnightly (once every two weeks); a bi-weekly (one sense)

fortnightly (not comparable)

1. occurring once in a fortnight; once every two weeks

fortnightly (not comparable)

1. once in a fortnight; once every two weeks
   • 1970, Lee Smith, "Between the Lines", as reprinted in, 2010, Mrs. Darcy and the Blue-Eyed Stranger, 2011 paperback edition, →ISBN, page 184 :

     That's where my column appears, in the Greenville Herald, fortnightly.