名詞 fading:

1. weakening in force or intensity
   同義詞：attenuation

動詞 fade:

1. become less clearly visible or distinguishable; disappear gradually or seemingly
   同義詞：fade, melt
2. lose freshness, vigor, or vitality
   同義詞：fade, wither
3. disappear gradually
   同義詞：evanesce, fade, blow over, pass off, fleet, pass
4. become feeble
   同義詞：languish, fade

1. The path grew more obscure in the fading light.
   小徑在漸漸消失的光線下變得更暗了。
2. Faded and dull in appearance.
   外表褪色的，單調(diào)的
3. Hopes of a peaceful settlement are now fading.
   和平解決的希望正在消失。
4. A good dye will not fade.
   染得好的顏色不會褪色。

fad.ing

n.（名詞）
A waning; a decline:
衰落；下降：
例句：
.The final factor in the fading of the Renaissance was the Counter Reformation.(Will Durant)
.最終導(dǎo)致文藝復(fù)興走向衰退的因素是反改革.(威爾·杜蘭特)

Fluctuation in the strength of radio signals because of variations in the transmission medium.
時強(qiáng)時弱：由于傳播中介的變化而引起的無線電波信號的強(qiáng)弱波動