01 a. Made or done in pleasant weather, or in circumstances involving but little exposure or sacrifice; as, a fair-weather voyage.
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1.
Made or done in pleasant weather, or in circumstances involving but little exposure or sacrifice; as, a fair-weather voyage.
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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.