alternate - definition and synonyms

adjective [usually before noun] 

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/ɔːlˈtɜː(r)nət/
  1. 1
    happening or coming one after another, in a regular pattern

    alternate periods of good and bad weather

    a pattern of alternate red and green stars

  2. 2
    happening on one day, week etc, but not on the day, week etc that immediately follows

    I go and visit him on alternate weekends.

  3. 3
    American alternative

    You’ll have to find an alternate route.

derived word

alternately

adverb