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precursors

NOUN

something that indicates outcome or event beforehand

Synonyms

STRONGEST

forerunner harbinger

STRONG

herald messenger outrider usher vanguard

NOUN

something that precedes another

Synonyms

STRONGEST

forerunner prototype

STRONG

ancestor antecedent forebear original originator parent pioneer predecessor

WEAK

antecessor foregoer

Antonyms

STRONG

derivative descendant

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The White House document claimed they had discussed Chinese investment in U.S. industries, purchases of U.S. oil and agricultural products, and ending the flow of fentanyl precursors into the U.S.

From Slate • May 16, 2026

It is part of a fleet of Iranian state-controlled vessels that have been accused of shipping rocket-fuel precursors to China.

From The Wall Street Journal • Apr. 22, 2026

This is a problem the EU and its precursors have been thinking about for a long time.

From Barron's • Mar. 30, 2026

Clinical trials are underway worldwide, including in Norway, to test NAD+ precursors like NR and NMN.

From Science Daily • Mar. 24, 2026

Their status as precursors led archaeologists to believe that the subsequent emergence of other complex societies was due to their example—or their conquest.

From "1491" by Charles C. Mann