dud

• 形容不起作用、有缺陷或令人失望的事物；也可指无用的人或失败的事物。

Describes something that fails to work or meet expectations; a disappointment.

1. Non-detonating explosiveB1informal

   Failing to explode or detonate, especially because it lacks an active charge.

   未爆炸的

   • The bomb squad safely disposed of the dud grenade.
   • He found an old dud firework in the garage.
   • The artillery shell was a dud and did not explode.

   同义词inertunexploded

   反义词activelive

2. Defective or uselessB2informal

   Not working properly or of poor quality; failing to perform as expected.

   有缺陷的

   • This DVD player is a dud; it won't even turn on.
   • They sold us a dud product that broke after one use.
   • The plan turned out to be a dud because nobody followed through.

   同义词brokendefectivefaultyineffectiveinoperativemalfunctioningunsounduselessworthless

   反义词effectivefunctionalpotentproductivesoundusefulworking

• 指不起作用或未达到预期的人或事物：如失败的人、未爆炸的炸弹，或完全无结果的事件。

A noun referring to something that fails to function properly or meet expectations, such as an unsuccessful person, a bomb that fails to explode, or an event that is completely ineffectual.

1. Unsuccessful personB2informal

   A person who fails to achieve success or meet expectations.

   失败者

   • He was a dud at the job interview.
   • She felt like a dud after failing the exam.
   • The team considered him a dud because he never scored.

   同义词also-ranfailurefloplosernonachieverunderachieverwashout

   反义词achieversuccesswinner

2. Failed explosionB2informal

   An explosive device or firework that fails to detonate or explode as intended.

   哑弹

   • The bomb was a dud and never went off.
   • The firework turned out to be a dud, disappointing the crowd.
   • The military safely disposed of the dud.

   同义词fizzlemisfire

   反义词blastbombchargeexplosionfirecracker

3. Failed event or thingB2informal

   An event, plan, or object that is completely unsuccessful or ineffective.

   失败的事物

   • The party was a total dud; nobody showed up.
   • The new product launch was a dud in the market.
   • His joke was a dud and nobody laughed.

   同义词bustdisasterfailurefiascofloplemonnonstarterturkeywashout

   反义词hitsuccess