retard

• 智力发育迟缓的人（过时且极具冒犯性的说法）；也指延迟或减速的过程。

A person who has an intellectual disability (now considered outdated and very offensive); also a delay or slowing down of a process.

1. A person with an intellectual disability (offensive).C1slangmedical

   An obsolete clinical term once used to describe individuals with developmental delays or learning disabilities; now considered a slur and replaced by respectful and specific medical terminology.

   智力障碍者（侮辱性，过时）

   • The use of the word retard as a slur is deeply hurtful and unacceptable.
   • Medical professionals now use terms like 'intellectual disability' instead of outdated labels.
   • Campaigns against bullying highlight that calling someone a retard causes serious harm.
   • The former diagnosis of mental retardation was officially replaced in clinical manuals decades ago.
   • He was offended when someone used the old-fashioned and offensive term to mock another student.

   同义词cretinidiotimbecilemoron

2. A delay or slowing down of a process.C2formal

   A reduction in speed or progress, often caused by an obstacle or intervention; most commonly used in technical or formal contexts such as 'flame retardant' or 'growth retardation'.

   延迟或减缓过程

   • The cold temperatures caused a significant slowing of the chemical reaction.
   • Engineers designed a timing mechanism that introduces a deliberate deceleration in the sequence.
   • Economic sanctions resulted in the significant delay of industrial development.
   • The doctor monitored the child for signs of developmental lag.
   • Adding an inhibitor resulted in the controlled slowing of the cure process.

   同义词decelerationdelayhindranceimpedimentretardationslowdownslowing

   反义词accelerationadvanceexpeditionhurry

• 动词，意为延迟或减缓某事物的进展或发展。现代用法中，用作名词指人时被视为冒犯，动词形式已基本过时，常被“延迟”或“减缓”取代。

A verb meaning to delay or hold back the progress or development of something. In modern usage, it is considered offensive when used as a noun referring to a person, and the verb form is largely obsolete or replaced by 'delay' or 'slow down'.

1. Slow down or delayB2formal

   To cause something to happen more slowly or later than expected.

   减缓或延迟

   • The heavy rain retarded the construction work.
   • Lack of funding retarded the project's progress.
   • The disease can retard a child's physical development.

   同义词brakecheckcurbdeceleratedelayhamperhold backimpedeobstructset backslowslow down

   反义词accelerateadvanceexpeditefurtherhastenpromotequickenspeed