Disclose (verb) ( dɪs kləʊz ) = to make information known that was previously secret, private, or unknown; to reveal something officially or formally; to uncover or expose something hidden.

Imagine a locked box containing important documents. When you open it and show everyone what’s inside, you’re disclosing the contents. The word carries a sense of deliberate revelation — you’re choosing to share something that wasn’t publicly known before. It’s more formal than simply “telling” or “saying” — there’s weight and significance to what’s being revealed.

MEANING 1: Reveal Secret or Private Information (Verb) — VERY COMMON

The core meaning is to make known something that was hidden, confidential, or unknown. Companies disclose their financial results. Whistleblowers disclose wrongdoing. People disclose personal information on forms. The word implies that the information matters — it’s not trivial chat but something significant being brought to light.

There’s often a sense of obligation or decision involved. You disclose because you’re required to (by law, contract, or ethics) or because you’ve decided the information should be shared. It’s a conscious, deliberate act.

MEANING 2: Legal and Official Revelation (Verb) — VERY COMMON

In legal, business, and official contexts, disclose has a specific technical meaning: to formally share required information. Companies must disclose risks to investors. Doctors must disclose treatment options to patients. Job applicants may need to disclose criminal records. Failure to disclose required information can have serious legal consequences.

This meaning appears constantly in contracts, regulations, and official documents. “Full disclosure” means revealing everything relevant, hiding nothing.

MEANING 3: Uncover or Expose Something Physical (Verb) — Less Common

In older or more literary usage, disclose can mean to physically reveal or uncover something hidden. “The curtain rose to disclose an elaborate stage set.” “Removing the covering disclosed the statue beneath.” This meaning is rare in everyday speech but appears in descriptive writing.

DISCLOSE vs REVEAL vs TELL:

Disclose is more formal and implies previously hidden or confidential information. Reveal is similar but slightly less formal and can apply to surprises or discoveries. Tell is neutral and everyday — no implication of secrecy. You “tell” someone the time, but you “disclose” your salary.

Examples from the street:

• “The company refused to disclose how much they paid.” → The business wouldn’t reveal the amount they spent; they kept it secret
• “She disclosed her medical condition to her employer.” → She formally informed her workplace about her health issue
• “Full disclosure: I own shares in the company.” → I’m being completely transparent: I have a financial interest here

2. Most Common Patterns

Disclose as revealing information (verb):

• disclose + noun (information/details/facts) → reveal specific content
• disclose + that clause → reveal a piece of news (disclose that profits had fallen)
• disclose + wh- clause → reveal answers to questions (disclose how much, disclose where)
• disclose something to someone → reveal information to a specific person or group
• refuse/decline to disclose → choose not to reveal

Disclose as legal/official requirement (verb):

• required/obliged to disclose → must reveal by law or regulation
• fail to disclose → not reveal something you should have (serious)
• fully disclose → reveal everything, hide nothing
• publicly disclose → make information available to everyone

Related forms:

• disclosure (noun) → the act of disclosing; the information disclosed
• full disclosure → complete transparency; also used as a phrase before admitting something
• non-disclosure agreement (NDA) → legal contract preventing sharing of confidential information

3. Phrasal Verbs

Note: “Disclose” doesn’t form common phrasal verbs — these are related expressions:

• let on → reveal information, often accidentally or reluctantly (informal)
  Example: “She didn’t let on that she already knew about the surprise party.”
• give away → reveal something, often unintentionally; betray a secret
  Example: “His nervous expression gave away the fact that he was lying.”
• open up → start talking honestly about personal feelings or experiences
  Example: “After months of therapy, he finally opened up about his childhood trauma.”
• come out with → suddenly reveal or say something surprising
  Example: “She just came out with the news that she was resigning.”

4. Example Sentences

1. The company is legally required to disclose all financial risks to potential investors
   → The business is obligated by law to reveal all monetary dangers to people considering putting in money.
2. She refused to disclose how much she earned, saying it was private
   → She declined to reveal her salary, stating it was personal information.
3. The investigation disclosed that several executives had been involved in the fraud
   → The enquiry revealed that multiple senior managers had participated in the deception.
4. Full disclosure: I used to work for the company I’m about to review
   → In complete transparency: I was formerly employed by the business I’m going to evaluate.
5. Applicants must disclose any criminal convictions on the form
   → Candidates must reveal any past guilty verdicts on the application.
6. The whistleblower disclosed evidence of widespread corruption
   → The informant revealed proof of extensive dishonest practices.
7. Doctors are required to disclose all treatment options to patients
   → Physicians must inform sick individuals about every available medical approach.
8. He signed a non-disclosure agreement and couldn’t talk about the project
   → He agreed to a confidentiality contract and was forbidden from discussing the work.
9. The report disclosed serious safety failures at the factory
   → The document revealed significant protection shortcomings at the manufacturing plant.
10. She disclosed her diagnosis to close friends but kept it from colleagues
    → She revealed her medical condition to intimate companions but hid it from workmates.

5. Personal Examples

1. Students sometimes hesitate to disclose that they’re struggling with the material — I try to create an atmosphere where admitting confusion feels safe rather than embarrassing
   → Learners occasionally hesitate to reveal that they’re finding the content difficult — I attempt to build an environment where acknowledging bewilderment feels comfortable rather than shameful.
2. Full disclosure: I make mistakes with English too — I tell students this because knowing their teacher isn’t perfect helps them feel less anxious about their own errors
   → In complete transparency: I slip up with the language as well — I share this with learners because understanding their instructor isn’t flawless helps them worry less about their own mistakes.

6. Register: Formal

✔ Native usage tips

• “Disclose” is distinctly formal — in casual speech, native speakers would say “tell,” “share,” “reveal,” or “let someone know.” Using “disclose” in everyday conversation sounds stiff or legalistic
• “Full disclosure” has become a conversational phrase — people say it before admitting something that might affect their credibility. “Full disclosure: I haven’t actually read the book.” It signals honesty and transparency
• “Non-disclosure agreement” (NDA) is essential business vocabulary — these contracts are extremely common in corporate settings, preventing employees or partners from sharing confidential information
• “Failure to disclose” is serious legal language — in contracts, job applications, and official forms, not revealing required information can have severe consequences, including termination, fines, or prosecution
• “Disclosed” in journalism signals important revelations — “Documents disclosed that…” or “Sources disclosed…” suggests newsworthy information being brought to public attention
• Medical and therapy contexts: Patients “disclose” symptoms, history, or trauma to healthcare providers. The word acknowledges that sharing such information requires trust and involves vulnerability

✔ Similar expressions / words

• Reveal → similar but slightly less formal; can apply to surprises and discoveries as well as secrets
• Divulge → very similar and equally formal; often implies sharing secrets that perhaps shouldn’t be shared
• Expose → similar but stronger; often implies revealing wrongdoing or something scandalous; more dramatic