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

Proxima is developing stellarator technology, one of a handful of approaches to fusion, and hopes to have its fusion demonstrator — a proof-of-concept precursor to a commercial power plant — up and running in the early 2030s. — Kai Nicol-Schwarz, CNBC, 7 July 2026

Serotonin is a precursor for melatonin, a hormone that regulates your sleep-wake cycleSince. — Jillian Kubala, Health, 7 July 2026

The new document reads like a precursor for the president to attempt to overhaul the institution. — Kelsey Ables, The Atlantic, 6 July 2026

The event served as a precursor to their lavish 1,000-person wedding the next day, both of which were held at Madison Square Garden. — Christina Perrier, InStyle, 6 July 2026