Introduction
Nadsat is the invented slang language from A Clockwork Orange, Anthony Burgess's 1962 novel. It mixes Russian roots, Cockney rhyming slang, and made-up words into a teenage argot used by the protagonist Alex and his droogs. Type English text above and the tool swaps each word for its Nadsat equivalent. Toggle to decode mode to translate Nadsat back to English. The vocabulary table in the settings panel shows etymology for every entry. All processing runs in your browser.
What this tool does
- Word-level translation between English and Nadsat using a dictionary of attested vocabulary from the novel.
- Etymology notes: each vocabulary entry is tagged with its source, Russian, Cockney, or invented.
- Bidirectional: switch between English-to-Nadsat and Nadsat-to-English modes with one click.
- The settings panel shows the full vocabulary table with a search filter.
- Unknown words pass through unchanged in both directions. Punctuation and whitespace are preserved.
- Multi-word phrases like "starry ptitsa" (old woman) are matched as a unit before single-word lookup.
- All translation runs client-side. No text is sent to any server.
How this tool works
The translator splits your input into tokens using a regex that separates letter sequences from non-letter characters. Each word token is lowercased and looked up in a dictionary. In English-to-Nadsat mode, the dictionary maps English words like "friend" to "droog" and "milk" to "moloko". In Nadsat-to-English mode, the reverse lookup runs. Multi-word phrases are matched first, sorted by length descending, so "starry ptitsa" is recognized as a single phrase before "starry" and "ptitsa" are looked up individually. Words not found in the dictionary pass through unchanged. Non-word tokens (spaces, punctuation, line breaks) are preserved exactly. The mode setting syncs to a URL query parameter so you can share a link that preserves your configuration.
How the Nadsat language works
Nadsat was created by Anthony Burgess for his novel A Clockwork Orange), published in 1962. Burgess (1917-1993) was a British author and composer who spoke several languages, including Russian. The name "Nadsat" comes from the Russian suffix for "-teen" (-nadsat), as in the numbers eleven through nineteen (odinnadtsat through devyatnadtsat). The Wikipedia article on Nadsat documents the language's structure and sources.
Burgess built Nadsat primarily from Russian vocabulary. Words like "moloko" (milk, from Russian moloko), "droog" (friend, from Russian drug), and "horrorshow" (good, from Russian khorosho) are direct borrowings with English spelling. He mixed in Cockney rhyming slang ("pretty polly" for money) and pure inventions ("yarbles"). The language has roughly 200 to 300 words. Burgess designed it to be partially intelligible from context, so the reader learns it by reading rather than by consulting a glossary.
Stanley Kubrick adapted the novel into a controversial 1971 film) starring Malcolm McDowell as Alex DeLarge. The film used Nadsat extensively in its dialogue. Kubrick's adaptation was based on the American edition of the novel, which had omitted the final chapter where Alex reforms. The British edition restored this chapter in 1986.
Nadsat is not a full language. It has no unique grammar. The syntax is English. Only the vocabulary is replaced. This makes it a relex rather than a true constructed language. For other fictional slang systems, see the Newspeak translator and the Thieves' Cant translator. For cipher-based fictional languages, try the Al Bhed translator or the Alienese translator.
How to use this tool
- Select the mode: "English to Nadsat" to translate English words into Nadsat, or "Nadsat to English" to reverse the lookup.
- Type or paste your text in the input field. The output updates instantly as you type.
- Each word is looked up in the vocabulary dictionary. Multi-word phrases are matched first. Unknown words pass through unchanged.
- Use the swap button to quickly switch translation direction without retyping.
- Search the vocabulary table in the settings panel to find specific words and their etymology.
- Copy the result using the "Copy result" button.
Real-world examples
Translating a sentence into Nadsat
A reader types "the boy drank milk with his friend" in English-to-Nadsat mode. The tool looks up each word: "boy" becomes "malchick", "drank" passes through (not in the dictionary), "milk" becomes "moloko", "friend" becomes "droog". The output reads "the malchick drank moloko with his droog". The sentence is still readable because the grammar is English and the Nadsat words are partially guessable from context.
Decoding a Nadsat passage from the novel
A student encounters the line "I viddied the devotchka with the moloko" in the novel. They paste it into Nadsat-to-English mode. The tool reverses each lookup: "viddied" becomes "saw", "devotchka" becomes "girl", "moloko" becomes "milk". The output reads "I saw the girl with the milk". Words not in the dictionary, like "I" and "the", pass through unchanged because they are already English.
Exploring etymology with the vocabulary table
A linguistics student searches the vocabulary table for Russian-derived words. They type "Russian" in the search box and see entries like "droog" (from drug), "moloko" (from moloko), and "bezoomny" (from bezumny). They notice that roughly two-thirds of Nadsat vocabulary comes from Russian, with the remainder split between Cockney slang and pure inventions. This matches scholarly analyses of Burgess's sources.
Comparison with similar methods
| Method | Complexity | Typical use |
|---|---|---|
| Nadsat (word-level relex) | Medium | A Clockwork Orange fan writing, literary study |
| Newspeak (word-level) | Medium | Nineteen Eighty-Four fan writing, political satire |
| Thieves' Cant | Medium | Historical underworld slang, roleplaying |
| Al Bhed (substitution) | Low | Final Fantasy X in-game text, fan content |
Limitations or considerations
This tool performs word-level dictionary lookup, not full grammatical translation. Nadsat uses English syntax, so the grammar is preserved automatically. The vocabulary covers roughly 70 attested words from the novel. The full Nadsat lexicon has 200 to 300 words, so some less common terms may not be in the dictionary and will pass through unchanged. Etymology tags are approximate. Some words have mixed origins that are hard to classify. For other fictional slang, try the Newspeak translator or the Thieves' Cant translator. For cipher-based fictional languages, see the Al Bhed translator or the Alienese translator.
Frequently asked questions
Who invented Nadsat?
Anthony Burgess invented Nadsat for his 1962 novel A Clockwork Orange. Burgess was a British author who spoke Russian. He built the slang primarily from Russian vocabulary with additions from Cockney rhyming slang and his own inventions. The name comes from the Russian suffix -nadsat, meaning -teen, as in the numbers eleven through nineteen.
Is Nadsat a real language?
Nadsat is a constructed slang, not a natural language. It has no unique grammar. The syntax is standard English. Only the vocabulary is replaced, which makes it a relexification rather than a full conlang. It has roughly 200 to 300 words, all drawn from Russian, Cockney, or invented by Burgess. It is not spoken as a living language, though fans and scholars study it.
Why did Burgess use Russian words in Nadsat?
Burgess spoke Russian and wanted to create a slang that felt alien yet partially intelligible. Russian vocabulary was unfamiliar to most English readers in 1962, which gave the language its exotic feel. But many Russian words are guessable from context or cognates, so the reader learns Nadsat by reading rather than by consulting a glossary. Burgess also wanted to comment on the spread of Soviet culture.
How does the film version of Nadsat differ from the novel?
Stanley Kubrick's 1971 film uses Nadsat extensively in its dialogue, closely following the novel's vocabulary. The main difference is that Kubrick based his screenplay on the American edition of the novel, which omitted the final chapter where Alex reforms. The film's Nadsat is otherwise faithful to Burgess's original word list.
Conclusion
The Nadsat translator converts English text to and from the invented slang of A Clockwork Orange. Type your message, search the vocabulary table for etymology, and copy the output. For other fictional language tools, try the Newspeak translator, the Thieves' Cant translator, the Al Bhed translator, or the Alienese translator.