all-weather

all-weather (not comparable)

1. Not affected by climatic conditions; capable of normal operation regardless of precipitation, wind, sun, etc.

   an all-weather tire

   • 1987, Steven A. Hoffmann, “Ambiguity and India's claims to the Aksai Chin”, in Central Asian Survey‎, volume 6, number 3, pages 33–60:

     For China the Aksai Chin serves as a necessary communications link; an all-weather road system goes through there.

2. (figuratively) Always there when needed, reliable, dependable, loyal, faithful.

   Coordinate term: fair-weather

   an all-weather friend

• through thick and thin

• Weatherall, law leather