English Reference

Word

incompetent

Phoneticsin·com·pe·tent, stress on the second syllable

US/ˌɪnˈkɑmpətənt/

UK/ɪnkˈɒmpɪtənt/

Definitions

01unskilled or incapable

B2 · Upper Intermediate

adj. not having the skills or ability to do a job or task well.

adj. lacking the necessary ability, knowledge, or skill to perform a task or function successfully.

“The company fired the manager because he was incompetent and kept losing money.”

“The investigation revealed that the project failed due to an incompetent leadership team that ignored several safety warnings.”

02legally unfit

C1 · Advanced Law Formal · Technical

adj. not able to make good decisions for yourself because of a mental problem.

adj. lacking the legal or mental capacity to manage one's own affairs or to stand trial.

“The judge ruled that the man was mentally incompetent to sign the contract.”

“The court appointed a legal guardian after the defendant was declared mentally incompetent to manage his own financial estate.”

Antonyms

03geology/medicine

C2 · Proficiency Science Technical

adj. describing a part of the body or a layer of rock that is weak and changes shape easily.

adj. referring to a physical structure that fails to perform its function or lacks the strength to resist deformation.

“The doctor explained that an incompetent valve was causing the patient's heart problems.”

“In this geological formation, the incompetent layers of shale folded much more easily than the surrounding sandstone under tectonic pressure.”

Synonyms

Antonyms

04an incapable person

B2 · Upper Intermediate Countable noun Informal

n. a person who is not good at their job or lacks necessary skills.

n. a person who lacks the ability or qualities needed to perform a role effectively.

“I am tired of working with incompetents who never finish their work on time.”

“The political satirist portrayed the entire cabinet as a group of bumbling incompetents who were out of touch with reality.”

Synonyms

bungleridiot

Real-World Examples

“Indeed, the army has already learned this: compulsory recruits in the postwar period were typically unmotivated and incompetent; a drag rather than a boost to the military’s performance.”
The Guardian 30 Aug 2026
“Is the defence really that they can’t be malicious because they are incompetent?”
The Guardian 16 Dec 2016

Etymology

Borrowed from French incompétent, from Late Latin incompetentem, from Latin incompetēns, equivalent to in- + competent.

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

Word family

ADJECTIVE

incompetent(B2)

Domains

GeologyMedicine

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

QR code

englishreference.com/q/incompetent

English Reference