synthetic

American  

[sin-thet-ik] / sɪnˈθɛt ɪk /

adjective

1. of, pertaining to, proceeding by, or involving synthesis (opposed to analytic).

2. noting or pertaining to compounds formed through a chemical process by human agency, as opposed to those of natural origin.

   synthetic vitamins; synthetic fiber.

3. (of a language) characterized by a relatively widespread use of affixes, rather than separate words, to express syntactic relationships.

   Latin is a synthetic language, while English is analytic.

4. Logic. Also synthetical. of or relating to a noncontradictory proposition in which the predicate is not included in, or entailed by, the subject.

5. not real or genuine; artificial; feigned.

   a synthetic chuckle at a poor joke.

   Synonyms:

   sham, counterfeit, phony, fake

6. Jewelry.

   1. noting a gem mineral manufactured so as to be physically, chemically, and optically identical with the mineral as found in nature.

   2. (not in technical use) noting a gem mineral manufactured and pigmented in imitation of a natural gemstone of that name.

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noun

synthetics plural

1. something made by a synthetic, or chemical, process.

2. synthetics.

   1. substances or products made by chemical synthesis, as plastics or artificial fibers.

   2. the science or industry concerned with such products.

synthetic British  

/ sɪnˈθɛtɪk /

adjective

1. (of a substance or material) made artificially by chemical reaction

2. not genuine; insincere

   synthetic compassion

3. denoting languages, such as Latin, whose morphology is characterized by synthesis Compare polysynthetic agglutinative analytic

4. philosophy

   1. (of a proposition) having a truth-value that is not determined solely by virtue of the meanings of the words, as in all men are arrogant

   2. contingent Compare a posteriori empirical

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noun

1. a synthetic substance or material

synthetic Scientific  

/ sĭn-thĕt′ĭk /

1. Produced artificially, especially in a laboratory or other man-made environment. Nylon is a synthetic chemical compound.

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Other Word Forms

Derived Forms

• nonsynthetic
  adjective
• nonsynthetical
  adjective
• unsynthetic
  adjective
• nonsynthetically
  adverb
• synthetically
  adverb
• unsynthetically
  adverb

Inflected Forms

Nouns

• synthetics
  plural

Etymology

Origin of synthetic

1690–1700; < New Latin syntheticus < Greek synthetikós, equivalent to synthet ( ós ) placed together, verbid of syntithénai to put together ( syn- syn- + the-, stem of tithénai to put, place + -tos verbid suffix) + -ikos -ic

Explanation

Something made of artificial material, not natural items, can be described as synthetic. Some football stadiums have synthetic grass, and a leisure suit from the 1970s might be made of synthetic fabric. The adjective synthetic usually describes things created by chemical synthesis (synthetic compound, synthetic drug, synthetic material), but it sometimes describes an emotion that is feigned or not genuine. A person who exudes only synthetic friendliness probably isn't someone you want to hang out with, for example.

Example Sentences

See Examples For:

synthetic synthetics

Records also tumbled in the velodrome, on synthetic carpet and in the pool, as fans were treated to some world-class sporting action.

From BBC ● Aug. 3, 2026

The rise of high-quality AI-generated content on social media is eroding users’ ability to distinguish between real and synthetic media.

From The Wall Street Journal ● Aug. 2, 2026

The actors’ guild SAG-AFTRA in June ratified a new four-year contract with special protections against synthetic performers, and the union has backed a national bill designed to protect individuals from unauthorized, AI-generated digital replicas.

From Los Angeles Times ● Jul. 26, 2026

They occur naturally in the body, but synthetic peptides are increasingly buzzy in the wellness industry as the key to an optimized life.

From Barron's ● Jul. 24, 2026

She left behind heaps of stuff for Ralph and Dina to deal with, including a few hideous synthetic sweaters Dina had tossed her way at Christmas.

From "Orphan Train" by Christina Baker Kline

The contract allows for limited use of synthetics, under "unusual circumstances," when a generative AI system can be used to create a character who is not based on any actual person in the world.

From Barron's ● May 30, 2026

Some clothes are made of a blend of natural cotton and synthetics.

From The Wall Street Journal ● Mar. 21, 2026

Subsequent synthetics display a range of temperaments, from Lance Henriksen’s Bishop, realistic enough to pass for human, to Michael Fassbender’s David 8, the earliest Weyland-Yutani invention to achieve a lifelike version of artificial intelligence.

From Salon ● Sep. 8, 2025

The Federal Aviation Administration in 1999 recommended that garments made of cotton, wool, leather, and yes, even denim were preferable over synthetics.

From Slate ● Mar. 14, 2025

Many people from the old organic movement argued that to put synthetics in a processed food and then call it organic was a fraud.

From "The Omnivore's Dilemma" by Michael Pollan

Related Words

• fabricated
• manufactured