D defs.my
Entry 2 senses Webster, 1913

Fair-weather

· Fair·-weath·er · IPA
01 a. Made or done in pleasant weather, or in circumstances involving but little exposure or sacrifice; as, a fair-weather voyage.
  1. 1.
    Made or done in pleasant weather, or in circumstances involving but little exposure or sacrifice; as, a fair-weather voyage.
  2. 2.
    Appearing only when times or circumstances are prosperous; as, a fair-weather friend.
Phrases & compounds
Fair-weather sailor — a make-believe or inexperienced sailor; -- the nautical equivalent of carpet knight.