"Pneumonoultramicroscopicsilicovolcanoconiosis!" said Tom, answering the question of which word is the longest in the English dictionary.
Source: tatoeba (6590100)
Pneumonoultramicroscopicsilicovolcanoconiosis
//ˌnjuːmə.nəʊ.ʌl.tɹə.maɪ.kɹəʊˌskɒ.pɪkˌsɪ.lɪ.kəʊ.vɒl.keɪ.nəʊ.kəʊ.niˈəʊ.sɪs//
Synonyms for "pneumonoultramicroscopicsilicovolcanoconiosis" (4 found)
Ranked by relevance and common usage.
Closest matches (1)
Strong matches (1)
Related words (2)
Related word relations
OpenGloss and ConceptNet supply richer edges like generalizations, collocations, and derivations.
More general
2 entriescoordinate
3 entriesderived from
1 entriesetymologically related_to
4 entrieshas context
1 entriesis a
3 entriesrelated to
5 entriessimilar
3 entriesTranslations
13 translations across 10 languages.
Chinese Mandarin
1 entries- 礦工氣管癌 /矿工气管癌 noun (disease of the lungs)
Czech
1 entries- pneumonoultramikroskoppicsilicovolcanokonióza noun (disease of the lungs)
Finnish
1 entries- pneumonoultramikroskopikosilikovulkanokonioosi noun (disease of the lungs)
French
1 entries- pneumonoultramicroscopiquesilicovolcanoconiose noun (disease of the lungs)
German
3 entries- Quarzstaublunge noun (disease of the lungs)
- Quarzstaublungenkrankheit noun (disease of the lungs)
- Silikose noun (disease of the lungs)
Italian
1 entries- pneumonoultramicroscopicsilicovolcanoconiosi noun (disease of the lungs)
Japanese
2 entries- ニューモノウルトラマイクロスコーピックシリコヴォルケーノコニオシス noun (disease of the lungs)
- 塵肺 noun (disease of the lungs)
Korean
1 entries- 진폐증 noun (disease of the lungs)
Portuguese
1 entries- pneumoultramicroscopicossilicovulcanoconiose noun (disease of the lungs)
Spanish
1 entries- neumoconiosis noun (disease of the lungs)
Sample sentences
9 total sentences available.
Pneumonoultramicroscopicsilicovolcanoconiosis is a long word.
Source: tatoeba (10079325)
"Pneumonoultramicroscopicsilicovolcanoconiosis" is one of the biggest words in the English language.
Source: tatoeba (10205138)
Pneumonoultramicroscopicsilicovolcanoconiosis is the longest word in the dictionary with 45 letters.
Source: tatoeba (12756429)
Showing 4 of 9 available sentences.
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.