[1] : The Collaborative International Dictionary of English v.0.48

fair-weather \fair"-weath`er\, a.
   1. made or done in pleasant weather, or in circumstances
      involving but little exposure or sacrifice; as, a
      fair-weather voyage. --pope.
      1913 webster

   2. appearing only when times or circumstances are prosperous;
      as, a fair-weather friend.
      1913 webster

   fair-weather sailor, a make-believe or inexperienced
      sailor; -- the nautical equivalent of carpet knight.
      1913 webster
see also:
fair-weather sailor carpet knight 

Fair-Weather >> F Words
Fair-Weather, definition of term: Fair-Weather
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