Longest word in Spanish
Long words
In the table below, all of the Spanish nouns except for arteriosclerosis can be pluralised by adding an s (es for internacionalizaciones) to the end.

Longest word in Spanish

Section Title: Long words
Table Section Text: In the table below, all of the Spanish nouns except for arteriosclerosis can be pluralised by adding an s (es for internacionalizaciones) to the end.

Word	Letters	Syllables	Part of speech	Translation	RAE	Ref.

hipopotomonstrosesquipedaliofobia	33	9	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

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

inexorablemente	15	7	adverb	inexorably

paralelepípedo	14	7	noun	parallelepiped

Sentence(s)

Esternocleidooccipitomastoideos (31-letters) is the plural of the noun esternocleidooccipitomastoideo, which is the sternocleidomastoid.

final_sentence: Esternocleidooccipitomastoideos (31-letters) is the plural of the noun esternocleidooccipitomastoideo, which is the sternocleidomastoid.