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


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