English Reference

Word

challenger

Phoneticschal·lenger

US/ˈtʃæɫəndʒɝ/

UK/tʃˈælɪndʒɐ/

Definitions

01a competitor

B2 · Upper Intermediate Countable noun Sports

n. someone who competes against a champion or a leader to win their title or position.

n. a person or team that competes against a titleholder or incumbent in a contest or election.

“The young boxer is the first serious challenger the champion has faced in years.”

“The political newcomer emerged as a formidable challenger to the long-standing mayor, gaining significant ground in the recent polls.”

02one who disputes

C1 · Advanced Countable noun Law Formal

n. a person who questions or disagrees with an idea, a rule, or a statement.

n. an individual who formally or informally disputes the validity, legality, or truth of a claim or system.

“The legal challenger argued that the new law was unfair to small businesses.”

“As a persistent challenger of established scientific theories, she spent her career gathering evidence that contradicted the mainstream consensus.”

Synonyms

dissenterobjector

03tennis tournament tier

C1 · Advanced Countable noun Sports Technical

n. a professional tennis tournament that is one level below the top world tour.

n. a series of professional tennis tournaments constituting the second-highest tier of the ATP circuit.

“He won three challenger titles this year before moving up to the main tour.”

“Competing on the Challenger circuit is a grueling but necessary step for players aiming to break into the top one hundred world rankings.”

04the Space Shuttle

B2 · Upper Intermediate Countable noun Science

n. the name of a famous American space shuttle that was destroyed in an accident in 1986.

n. the second orbiter of NASA's space shuttle program, which suffered a catastrophic failure shortly after launch in January 1986.

“The teacher showed us a video about the history of the Challenger mission.”

“The Challenger disaster led to a significant hiatus in the American space program while safety protocols were completely overhauled.”

Real-World Examples

“The Newry-born 25-year-old entered the final event, the 800m, with a 51-point lead on nearest challenger Emma Oosterwegel of the Netherlands.”
BBC News 15 Aug 2026
“Brian Mundubile is the main opposition candidate among 13 challengers.”
BBC News 14 Aug 2026

Etymology

Inherited from Middle English chalengere, chalangeour, chalenger (“one who causes injury, or makes false charges or slanderous statements; one who disputes, disputant, objector; claimant”), and then partly from both of the following: From Middle English chalengen (“to accuse; to accuse falsely or maliciously, slander; to treat unjustly, wrong; to dispute, object; to make a claim or demand; to rebuke, scold; to issue a challenge to; etc.”) + -er, -ere (suffix forming agent nouns). Chalengen is derived from Anglo-Norman chalenger, and Old French chalenger, chalongier (“to challenge, dispute; to claim; etc.”) (modern French challenger), from Late Latin calumniāre, the second-person singular present active imperative or indicative of calumnior (“to accuse falsely; to make hurtful untrue comments about; etc.”), from Latin calumnia (“artifice, trickery; false accusation; false statement; etc.”) (ultimately from Proto-Indo-European ḱeh₁l-, *keh₁l- (“to beguile, deceive”)) + -or (the first-person singular present passive indicative of -ō (suffix forming regular first-conjugation verbs)). * From Old French chalengeor (“claimant, plaintiff; false accuser, slanderer”) (modern French challengeur), from chalenger, chalongier (see above) + -eor (variant of -or (suffix forming agent nouns)). By surface analysis, challenge (verb) + -er (suffix forming agent nouns).

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Word family

NOUN

challenger(B2)

Domains

LawSports

This entry

Exam level
CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.B2 FirstIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.5.5–6.5TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 4.0–4.572–94TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.785–944
Frequency
Frequent
Level
B2 · Upper Intermediate
Updated

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English Reference