English Reference

Word

straighten

Phoneticsstraight·en, stress on the first syllable

US/ˈstɹeɪtən/

UK/stɹˈeɪtən/

Definitions

01to make straight

B1 · Intermediate

v. to make something straight instead of curved or bent.

v. to cause something to become straight or linear.

“She used a hot iron to straighten the wrinkles in her dress.”

“The technician had to straighten the bent metal frame before the glass pane could be safely reinstalled.”

Synonyms

unbendalign

Antonyms

02to tidy up

B1 · Intermediate

v. to put things in their proper place or make a room neat.

v. to put in order or tidy a physical space or collection of objects.

“I need to straighten my desk before I can start working on the new project.”

“The staff spent the hour before the gallery opening straightening the displays and ensuring every brochure was perfectly aligned.”

Antonyms

cluttermess up

03to stand upright

B2 · Upper Intermediate

v. to make your body straight after you have been bending or sitting.

v. to assume an upright posture, especially after stooping, bending, or sitting.

“He straightened his back and took a deep breath after hours of gardening.”

“The elderly man straightened with a visible effort, wincing as his joints adjusted to the vertical position.”

Synonyms

Antonyms

04to clarify

B2 · Upper Intermediate Informal

v. to explain something clearly so there is no more confusion.

v. to clarify a situation, concept, or misunderstanding for an audience.

“Let me straighten the facts for you so you understand what really happened.”

“The manager called a meeting to straighten out the conflicting reports regarding the budget deficit.”

Antonyms

05to bribe

C2 · Proficiency Law Slang

v. to give someone money secretly so they will do something dishonest for you.

v. to bribe or corrupt an official or individual to ensure a specific outcome.

“The gang tried to straighten the witness before the trial started.”

“Rumours circulated that the developer had managed to straighten several members of the planning committee to ensure the permit was approved.”

Synonyms

06to change sexual orientation

C1 · Advanced Informal

v. to try to make someone heterosexual.

v. to attempt to change a person's sexual orientation to heterosexuality.

“The film explores the pressure he felt from his family to straighten himself out.”

“The documentary critiqued historical attempts by institutions to straighten individuals through coercive psychological methods.”

Usage

Can be used transitively with an object or intransitively; frequently pairs with 'up' or 'out'.

Pitfall

I need to straight my hair

I need to straighten my hair

Learners often use the adjective 'straight' as a verb instead of the correct verb form 'straighten'.

Etymology

From straight + -en. Compare Scots strauchten (“to straighten”).

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

Idioms

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.B1 PreliminaryIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.4.0–5.0TOEFL 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: 3.0–3.544–71TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.550–784
Frequency
Frequent
Level
B1 · Intermediate
Updated

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English Reference