Longest English Words

Longest English Words. A list of the top 100 longest words in the English language using a Scrabble dictionary.

RankWord# Letters
1 ethylenediaminetetraacetates 28
2 ethylenediaminetetraacetate 27
3 electroencephalographically 27
4 immunoelectrophoretically 25
5 phosphatidylethanolamines 25
6 phosphatidylethanolamine 24
7 intercomprehensibilities 24
8 electrocardiographically 24
9 electroencephalographers 24
10 electroencephalographies 24
11 overintellectualizations 24
12 dichlorodifluoromethanes 24
13 microelectrophoretically 24
14 microspectrophotometries 24
15 dichlorodifluoromethane 23
16 microspectrophotometers 23
17 microspectrophotometric 23
18 nonrepresentationalisms 23
19 electroencephalographer 23
20 electroencephalographic 23
21 overintellectualization 23
22 reinstitutionalizations 23
23 deinstitutionalizations 23
24 indistinguishablenesses 23
25 intersubstitutabilities 23
26 hexamethylenetetramines 23
27 carboxymethylcelluloses 23
28 carboxymethylcellulose 22
29 keratoconjunctivitides 22
30 keratoconjunctivitises 22
31 encephalomyocarditises 22
32 establishmentarianisms 22
33 unrepresentativenesses 22
34 hexamethylenetetramine 22
35 philoprogenitivenesses 22
36 phosphoglyceraldehydes 22
37 incomprehensiblenesses 22
38 indistinguishabilities 22
39 intercomprehensibility 22
40 constitutionalizations 22
41 otorhinolaryngological 22
42 otorhinolaryngologists 22
43 deinstitutionalization 22
44 immunohistochemistries 22
45 reinstitutionalization 22
46 electroencephalographs 22
47 electroencephalography 22
48 electrophysiologically 22
49 overcommercializations 22
50 spectrophotometrically 22
51 countercountermeasures 22
52 counterinterpretations 22
53 counterrevolutionaries 22
54 nonrepresentationalism 22
55 disestablishmentarians 22
56 microspectrophotometer 22
57 microspectrophotometry 22
58 disadvantageousnesses 21
59 disestablishmentarian 21
60 meningoencephalitides 21
61 microminiaturizations 21
62 stereomicroscopically 21
63 straightforwardnesses 21
64 countercountermeasure 21
65 counterdemonstrations 21
66 counterinterpretation 21
67 buckminsterfullerenes 21
68 tetrahydrocannabinols 21
69 clinicopathologically 21
70 electrocardiographies 21
71 electroencephalograms 21
72 electroencephalograph 21
73 electromyographically 21
74 electroretinographies 21
75 overcommercialization 21
76 overintellectualizing 21
77 extraterritorialities 21
78 unconstitutionalities 21
79 undemonstrativenesses 21
80 unexceptionablenesses 21
81 hypercholesterolemias 21
82 hypersusceptibilities 21
83 immunocytochemistries 21
84 immunoelectrophoreses 21
85 immunoelectrophoresis 21
86 immunoelectrophoretic 21
87 dendrochronologically 21
88 neuroendocrinological 21
89 neuroendocrinologists 21
90 nondenominationalisms 21
91 compartmentalizations 21
92 constitutionalization 21
93 contemporaneousnesses 21
94 otorhinolaryngologies 21
95 otorhinolaryngologist 21
96 anthropomorphizations 21
97 antiauthoritarianisms 21
98 antiferromagnetically 21
99 incomprehensibilities 21
100 indistinguishableness 21


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