PRECURSOR Synonyms: 54 Similar and Opposite Words

Q: How is the word 'precursor' distinct from other similar nouns?

Some common synonyms of precursor are forerunner , harbinger , and herald . While all these words mean "one that goes before or announces the coming of another," precursor applies to a person or thing paving the way for the success or accomplishment of another. // 18th century poets like Burns were precursors of the Romantics

Q: In what contexts can 'forerunner' take the place of 'precursor'?

The words forerunner and precursor are synonyms, but do differ in nuance. Specifically, forerunner is applicable to anything that serves as a sign or presage. // the blockade was the forerunner of war

Q: How are the words 'harbinger' and 'herald' related as synonyms of 'precursor'?

Harbinger and herald both apply, chiefly figuratively, to one that proclaims or announces the coming or arrival of a notable event. // their early victory was the harbinger of a winning season // the herald of a new age in medicine

precursor

noun

pri-ˈkər-sər

Definition of precursor

as in forerunner

one that announces or indicates the later arrival of another 18th-century lyric poets like Robert Burns were precursors of the Romantics

Synonyms & Similar Words

Relevance

as in ancestor

something belonging to an earlier time from which something else was later developed a precursor of the modern eggplant

Synonyms & Similar Words

Antonyms & Near Antonyms

Synonym Chooser

How is the word precursor distinct from other similar nouns?

Some common synonyms of precursor are forerunner, harbinger, and herald. While all these words mean "one that goes before or announces the coming of another," precursor applies to a person or thing paving the way for the success or accomplishment of another.

18th century poets like Burns were precursors of the Romantics

In what contexts can forerunner take the place of precursor?

The words forerunner and precursor are synonyms, but do differ in nuance. Specifically, forerunner is applicable to anything that serves as a sign or presage.

the blockade was the forerunner of war

How are the words harbinger and herald related as synonyms of precursor?

Harbinger and herald both apply, chiefly figuratively, to one that proclaims or announces the coming or arrival of a notable event.

their early victory was the harbinger of a winning season

the herald of a new age in medicine

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Recent Examples of precursor Should tens of thousands of American lives have been saved as a result of decisions made about fentanyl precursors in China, the implications are massive. — J. Travis Donahoe, STAT, 23 Oct. 2026 Just as concerning, the pair may run into the same eligibility issues at the precursors as Seyfried. — Nate Jones, Vulture, 23 Oct. 2026 The parents of the child injured filed a tort claim (a possible precursor to a lawsuit) against Boise, asking for millions. — Idaho Statesman, 21 Oct. 2026 The three have also introduced tax plans that could be precursors to 2028 platforms. — Jared Ochacher, CBS News, 20 Oct. 2026 See All Example Sentences for precursor

Recent Examples of Synonyms for precursor

Noun

Koslow’s screen career began in 1976 as the writer of the film Lifeguard, a ’70s-era Baywatch forerunner starring a hunky Sam Elliott and Anne Archer.

— Tom Tapp, Deadline, 19 Oct. 2026
Rather than try to replicate his forerunners’ styles of success, Ternus has so far played to his own strengths—which are also those of Apple, a company that first and foremost builds beautiful products that spark productivity, creativity, and joy.

— Andrew R. Chow, Time, 15 Oct. 2026

Definition of forerunner

Noun

According to family history, DaCosta Levy’s family lineage traced to Portugal, where his ancestors had been mariners — almost certainly Sephardic Jews who scattered across the Atlantic world after the Inquisition.

— Zachary Kranc, Sun Sentinel, 27 Oct. 2026
Government officials previously said that these 11 families split from a common male-line ancestor some 600 years ago, and are now at least 36 degrees of kinship from Naruhito.

— Chad de Guzman, Time, 26 Oct. 2026

Definition of ancestor

Noun

What treatments are available Treatment options generally fall into three tiers, each with different cost and access footprints worth understanding before symptoms escalate.

— Samantha Agate, Sacbee.com, 21 Oct. 2026
What to Do If Symptoms Affect Your Work If symptoms are interfering with your work, start by considering what kind of support would actually help.

— Jo Ann Liguori, Flow Space, 21 Oct. 2026

Definition of symptom

Noun

Chain bookselling, which enabled the unification of the reading market, was one of the first heralds of a globalizing age.

— Nathan Heller, New Yorker, 19 Oct. 2026
This increasingly seamless connection between runway collections and store stock heralds a new meaning for commercial, repositioning the role of the runway.

— Joe Bobowicz, Vogue, 8 Oct. 2026

Definition of herald

Noun

Every year after Halloween, Spirit Halloween’s stores empty out and the signs come down.

— Catherina Gioino, Fortune, 24 Oct. 2026
One particularly promising example is an MRI technique that identifies the central vein sign, a feature that can help physicians distinguish lesions associated with MS from abnormalities caused by other conditions.

— Bruce Bebo, STAT, 24 Oct. 2026

Definition of sign

Browse Nearby Words

preconditions

precursor

precursors

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Style

“Precursor.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/precursor. Accessed 28 Oct. 2026.

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Synonyms of precursor

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