inactive

• 形容某人或某物不活跃、不运作或不移动；当前未被使用或不起作用。

Describes someone or something that is not active, working, or moving; currently not in use or operation.

1. Not active or movingB1formal

   Not engaged in physical or mental activity; motionless or idle.

   不活跃的

   • The volcano has been inactive for centuries.
   • He led an inactive lifestyle after his retirement.
   • The machine remained inactive due to a power failure.

   同义词dormantidleimmobileinertmotionlesspassivequiescentsluggishstaticstationary

   反义词activebusyenergeticlivelymoving

2. Chemically inertC1formalscientific

   Not participating in a chemical reaction; chemically stable.

   化学惰性的

   • Noble gases are chemically inactive under normal conditions.
   • The substance remains inactive in the solution.
   • Inactive ingredients in the medication do not affect the body.

   同义词inertpassivestableunreactive

   反义词activelabilereactive

3. Not progressing or developingB2formalmedical

   Not increasing, progressing, or changing; remaining stable.

   不活跃的

   • The disease remained inactive for several years.
   • The tumor was found to be inactive and required no treatment.
   • The investigation became inactive due to lack of evidence.

   同义词dormantinertquiescentstagnantstaticunchanging

   反义词activedeveloping

4. Not in military serviceB2formalpolitical

   Not currently involved in active military operations or duty.

   非现役的

   • He was placed on inactive reserve status after his deployment.
   • The troops remained inactive during the ceasefire.
   • Inactive personnel were called back for the emergency.

   同义词dischargedreserveretired

   反义词active

5. Not exerting influenceC1formal

   Not having an effect or influence on a situation or process.

   无影响力的

   • The committee remained inactive in the decision-making process.
   • Her role in the project was largely inactive.
   • The law became inactive after the new regulations were passed.

   同义词inertneutralpassiveuninfluential

   反义词activeinfluential

6. Not erupting (volcano)B2formalscientific

   Describing a volcano that is not currently erupting but is not extinct.

   休眠火山（未喷发）

   • Mount Fuji is considered an inactive volcano.
   • The inactive volcano showed no signs of activity for decades.
   • Scientists monitor inactive volcanoes for potential eruptions.

   同义词dormantquiescentsleeping

   反义词active