adj.(形容词)

1. 可怕的,令人畏惧的terrific; frightful
2. 令人惊叹〔钦佩〕的very impressive; intimidating
3. 难以克服〔对付〕的difficult to deal with or overcome

• ☆ 15世纪中期进入英语，直接源自古法语的formidable；最初源自拉丁语的formidabilis，意为恐惧。

dauntingadj.令人畏惧的动词daunt的现在分词.

threateningadj.威胁(性)的；凶兆的；险恶的；胁迫的动词threaten的现在分词.

1. He was one of the most formidable intellects of his time.
   他是该时代的盖世奇才。
2. His mother is a most formidable lady.
   他的母亲是个最令人生畏的妇人。
3. They climbed up the last part of the mountain in formidable weather conditions.
   他们在恶劣的天气条件下登上了山的顶峰。
4. Martin is formidable. His left hook is devastating.
   马丁很难对付，他的左钩拳极有威力。
5. He faced formidable opposition in carrying out this policy.
   在执行这一政策的过程中, 他遭到难以抵挡的反对。