retardant: meaning, definition, pronunciation and examples
Low-to-Mid (C1)Technical/Specialized
Quick answer
What does “retardant” mean?
A substance that delays or slows down a process, especially combustion or chemical reaction.
Audio
Pronunciation
Definition
Meaning and Definition
A substance that delays or slows down a process, especially combustion or chemical reaction.
More broadly, anything that acts to hinder, slow, or impede an action, process, or development.
Dialectal Variation
British vs American Usage
Differences
Spelling and usage are identical. No significant differences in meaning or application.
Connotations
The word itself is neutral and technical. However, the related verb "retard" and especially the pejorative noun "retard" are highly offensive, creating a sensitive context for the word. In technical fields, the term is standard.
Frequency
Frequency is similar in both varieties, confined to scientific, industrial, and safety contexts.
Grammar
How to Use “retardant” in a Sentence
[chemical/substance] + BE + retardant + FOR + [process][noun] + retardantretardant + [noun]Vocabulary
Collocations
Examples
Examples of “retardant” in a Sentence
verb
British English
- [Not used as a verb. The verb is 'retard', but it is often avoided due to offensive connotations.]
American English
- [Not used as a verb. The verb is 'retard', but it is often avoided due to offensive connotations.]
adverb
British English
- [No standard adverbial form. 'Retardantly' is not used.]
American English
- [No standard adverbial form. 'Retardantly' is not used.]
adjective
British English
- The new furniture must be made with flame-retardant materials.
- They developed a corrosion-retardant coating for the hull.
American English
- Building code requires flame-retardant insulation in the attic.
- The treatment leaves a moisture-retardant barrier on the wood.
Usage
Meaning in Context
Business
Used in manufacturing, construction, and safety compliance contexts (e.g., 'The new fabric meets flame-retardant regulations').
Academic
Common in chemistry, materials science, engineering, and forestry (e.g., 'studying the efficacy of phosphate-based retardants').
Everyday
Rare. Might be encountered in safety instructions, product labels, or news about wildfires (e.g., 'Planes dropped fire retardant on the blaze').
Technical
The primary domain. Precise term for substances that slow combustion, oxidation, or other chemical reactions.
Vocabulary
Synonyms of “retardant”
Vocabulary
Antonyms of “retardant”
Watch out
Common Mistakes When Using “retardant”
- Using 'retardant' as a standalone adjective meaning 'slow' (e.g., 'a retardant progress' is incorrect). It is almost always used in compound forms or attributively.
- Confusing it with 'resistant' ('fire-resistant' implies ability to withstand; 'fire-retardant' implies it actively slows combustion).
- Mispronouncing as /ˈriːtɑːdənt/; stress is on the second syllable.
FAQ
Frequently Asked Questions
The word 'retardant' itself is a neutral, technical term. However, it is derived from the verb 'retard', which is now often avoided in non-technical contexts due to its association with the deeply offensive slur 'retard'. In scientific and safety fields, 'retardant' remains standard and acceptable.
'Fire-resistant' describes a material that inherently withstands fire or does not easily combust. 'Fire-retardant' describes a substance (often a treatment or additive) that is specifically designed to slow down or inhibit the spread of fire. A material can be made fire-resistant by applying a fire-retardant coating.
Yes, but it is most common and clearest when preceded by a modifier indicating what it retards (e.g., 'fire retardant', 'corrosion retardant'). In context, it can stand alone (e.g., 'Spray the retardant on the affected area'), but the type of retardant is usually implied by the situation.
It functions most frequently as a noun ("a flame retardant") or as an adjective in compound modifiers ("flame-retardant fabric"). It is not used as a standalone verb or adverb.
A substance that delays or slows down a process, especially combustion or chemical reaction.
Retardant is usually technical/specialized in register.
Retardant: in British English it is pronounced /rɪˈtɑːd(ə)nt/, and in American English it is pronounced /rɪˈtɑːrd(ə)nt/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “[None specific to this word]”
Learning
Memory Aids
Mnemonic
Think of a car's RETARDER (a braking system on large vehicles) which SLOWS it down. A RETARDANT is a chemical 'brake' for fire or rust.
Conceptual Metaphor
A RETARDANT IS A BRAKE / A RETARDANT IS A SHIELD AGAINST SPEED.
Practice
Quiz
In which of the following contexts is the word 'retardant' MOST appropriately used?