Synonyms of precursor

precursor

noun

pri-ˈkər-sər 

1

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

• forerunner
• harbinger
• symptom
• herald
• sign
• angel
• outrider
• foretaste
• foregoer
• messenger
• forewarning
• foreshadowing
• advertiser
• announcer
• runner
• portent
• foreshadower
• presage
• omen
• crier
• proclaimer
• courier
• bellwether
• foreboder
• foreboding
• auspice
• prefiguring
• blazoner
• augury
• boding
• mark

2

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

• forerunner
• ancestor
• prototype
• predecessor
• antecedent
• archetype
• original
• granddaddy
• originator
• daddy
• model
• foregoer
• mother
• sire
• father

Antonyms & Near Antonyms

• descendant
• derivative
• by-product
• outgrowth
• offshoot
• son
• daughter
• spin-off

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

Recent Examples of precursor

China remains the leading source of precursor chemicals used to make fentanyl and other synthetic drugs in Mexico and elsewhere, and US officials say Beijing’s efforts to tighten oversight of its pharmaceutical sector still fall short. —Alexandra Banner, CNN Money, 14 May 2026

Health Secretary Wes Streeting became the first senior minister to quit Starmer’s Cabinet on Thursday in what is expected to be a precursor to challenging his leadership. —Danica Kirka, Los Angeles Times, 14 May 2026

Health Secretary Wes Streeting became the first senior minister to quit Starmer's Cabinet in what is expected to be a precursor to challenging his leadership. —CBS News, 14 May 2026

Those losses were a precursor to a lackluster 2025-26 season that ended with a first-round series loss to the Anaheim Ducks in six games. —Sean Gentille, New York Times, 14 May 2026