Longest English Words

Name the Longest Words in the English Language

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Last updated: March 19, 2024

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Letters	Answer
189,819	Methionylthreonylthreonylglutaminylalanyl…isoleucine
52	Aequeosalinocalcalinoceraceoaluminosocupreovitriolic
45	Pneumonoultramicroscopicsilicovolcanoconiosis
36	Hippopotomonstrosesquippedaliophobia
34	Supercalifragilisticexpialidocious
30	Pseudopseudohypoparathyroidism
30	Eellogofusciouhipoppokunurious
29	Floccinaucinihilipilification
28	Antidisestablishmentarianism
27	Honorificabilitudinitatibus
26	Pneumoencephalographically
25	Thyroparathyroidectomized
24	Pseudohypoparathyroidism
23	Dichlorodifluoromethane
22	Otorhinolaryngological
21	Pneumoencephalography
21	Incomprehensibilities
19	Xenotransplantation
17	Sesquipedalianism
16	Trichotillomania
15	Uncopyrightable
14	Tergiversation