1. a shortening of adread, contraction of ondread "counsel or advise against," also "dread, fear, be afraid," from on- / ond- "against" + read "advise" (see read).
2. 谐音“惴的” ---- 惴惴不安的 --- 因为恐惧、害怕而显得惴惴不安。
dread 恐惧,令人惧怕的事物缩写自古英语ondraedan, 谏言,建议放弃,来自ond-, 相对,相反,词源同anti-, -raedan, 建议,辩理,词源同reason, read. 即劝阻,恐怖的结果,引申义恐惧,惧怕。