減る の訳語→ drop erode fail fall lose mar slacken slow
衰える の訳語→ diminish rot slip spend wither
衰退 の訳語→ declination degeneracy ebb entropy failure retreat
断る の訳語→ explain permission rebuff reject resistance say tell word
凋落 の訳語→ comedown disruption
乱れ の訳語→ sloppy turbulence