# decode

/dɪˈkoʊd/ (US) · /dɪkˈəʊd/ (UK) · CEFR B2 · Verb

Source: https://englishreference.com/word/decode
Updated: 2026-05-11

## Definition

to translate a secret message or difficult code into plain language you can understand. You can also use it when you finally understand a complicated idea.

For teachers: to convert a coded or encoded message back into its original, intelligible form. Often describes the process of interpreting complex signals or extracting meaning from a specific symbolic system.

## Examples

- The computer needs a password to decode the hidden files.
- Historians spent decades trying to decode the ancient symbols carved into the temple walls.
- While the software can quickly decode the encrypted data, the human analyst must still interpret the underlying intent of the communication.

## Usage notes

- The verb is transitive and requires a direct object, such as a message, signal, or text.

---

From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.