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 microspectrophotometers 23
16 microspectrophotometric 23
17 nonrepresentationalisms 23
18 dichlorodifluoromethane 23
19 hexamethylenetetramines 23
20 electroencephalographer 23
21 electroencephalographic 23
22 overintellectualization 23
23 reinstitutionalizations 23
24 carboxymethylcelluloses 23
25 indistinguishablenesses 23
26 intersubstitutabilities 23
27 deinstitutionalizations 23
28 deinstitutionalization 22
29 carboxymethylcellulose 22
30 incomprehensiblenesses 22
31 indistinguishabilities 22
32 intercomprehensibility 22
33 spectrophotometrically 22
34 philoprogenitivenesses 22
35 phosphoglyceraldehydes 22
36 immunohistochemistries 22
37 reinstitutionalization 22
38 electroencephalographs 22
39 electroencephalography 22
40 electrophysiologically 22
41 overcommercializations 22
42 hexamethylenetetramine 22
43 disestablishmentarians 22
44 unrepresentativenesses 22
45 countercountermeasures 22
46 counterinterpretations 22
47 counterrevolutionaries 22
48 nonrepresentationalism 22
49 encephalomyocarditises 22
50 establishmentarianisms 22
51 microspectrophotometer 22
52 microspectrophotometry 22
53 keratoconjunctivitides 22
54 keratoconjunctivitises 22
55 constitutionalizations 22
56 otorhinolaryngological 22
57 otorhinolaryngologists 22
58 compartmentalizations 21
59 constitutionalization 21
60 contemporaneousnesses 21
61 otorhinolaryngologies 21
62 otorhinolaryngologist 21
63 unconstitutionalities 21
64 undemonstrativenesses 21
65 unexceptionablenesses 21
66 anthropomorphizations 21
67 antiauthoritarianisms 21
68 antiferromagnetically 21
69 pseudocholinesterases 21
70 buckminsterfullerenes 21
71 clinicopathologically 21
72 extraterritorialities 21
73 tetrahydrocannabinols 21
74 establishmentarianism 21
75 meningoencephalitides 21
76 microminiaturizations 21
77 stereomicroscopically 21
78 straightforwardnesses 21
79 countercountermeasure 21
80 counterdemonstrations 21
81 counterinterpretation 21
82 disadvantageousnesses 21
83 disestablishmentarian 21
84 multidimensionalities 21
85 acetylcholinesterases 21
86 adrenocorticosteroids 21
87 adrenocorticotrophins 21
88 pseudosophistications 21
89 psychopharmacological 21
90 psychopharmacologists 21
91 psychophysiologically 21
92 psychotherapeutically 21
93 electrocardiographies 21
94 electroencephalograms 21
95 electroencephalograph 21
96 electromyographically 21
97 electroretinographies 21
98 overcommercialization 21
99 overintellectualizing 21
100 hypercholesterolemias 21


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