Longest word in Spanish

This article describes some of the longest words in the Spanish language.

esternocleidooccipitomastoideos (31 letters) is the plural of the noun esternocleidooccipitomastoideo, which is the sternocleidomastoid, a muscle in the human neck. The word has a 22-letter synonym: esternocleidomastoideo, which is shorter because it omits the Latin prefix ('occipital'). Both words are abbreviated as ECOM.

The 24-letter word , plural of electroencefalografista, means 'electroencephalographists' or 'electroencephalographers': specialists in the brain measurement technology of electroencephalography (EEG).

The 23-letter adverb anticonstitucionalmente means 'anticonstitutionally'. Anticonstitucionalmente is also the Portuguese translation; the French translation, anticonstitutionnellement, is an exceptionally long word as well (25 letters).

Long words

In the table below, all of the Spanish nouns except for can be pluralised by adding an s (es for ) to the end. The adjective can also be pluralised with an s; the plurals of the other adjectives end in es.

The RAE column indicates whether the Real Academia Española lists and defines the word in the Diccionario de la lengua española, its official dictionary.

Word Letters Syllables Part of speech Translation hipopotomonstrosesquipedaliofobia 33 13 noun hippopotomonstrosesquipedaliophobia esternocleidooccipitomastoideo 30 13 noun sternocleidomastoid hexakosioihexekontahexafobia 28 10 noun hexakosioihexekontahexaphobia anticonstitucionalmente 23 9 adverb anticonstitutionally electroencefalografista 23 10 noun electroencephalographer esternocleidomastoideo 22 9 noun sternocleidomastoid electroencefalografía 21 10 noun electroencephalography otorrinolaringológico 21 10 adjective otorhinolaryngological internacionalización 20 8 noun internationalization electroencefalograma 20 9 noun electroencephalogram otorrinolaringología 20 10 noun otorhinolaryngology electrocardiografía 19 9 noun electrocardiography desafortunadamente 18 8 adverb unfortunately anticonstitucional 18 7 adjective anticonstitutional desconsoladamente 17 7 adverb disconsolately interculturalidad 17 7 noun interculturality arteriosclerosis 16 6 noun arteriosclerosis electrodoméstico 16 7 noun home appliance inconstitucional 16 6 adjective unconstitutional limpiaparabrisas 16 7 noun windshield wiper inexorablemente15 7 adverb inexorably lamentablemente 15 6 noun unfortunately paralelepípedo 14 7 noun parallelepiped

Longest word in Spanish

Bron en licentie