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20 Longest English Words

Can you name the twenty longest words (by character count) in the english Word Bomb dictionary? - if a word has both a plural and singular variation in the top 20, the singular version is removed
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Last updated: November 7, 2025
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First submittedNovember 7, 2025
Times taken38
Average score35.0%
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Characters
Definition
Word
34
Extraordinarily good; wonderful
Supercalifragilisticexpialidocious
31
Colorless and tasteless chemical compound originally created as an insecticide. Is classified as an organochloride and is highly toxic. Also known as DDT
Dichlorodiphenyltrichloroethane
30
A rare inherited endocrine disorder
Pseudopseudohypoparathyroidism
30
Medical term for "brain freeze"
Sphenopalatineganglioneuralgia
29
Estimating something as "worthless"
Floccinaucinihilipilification
29
Irrational fear of the number 666 (Satan's number)
Hexakosioihexekontahexaphobia
28
Opposition to the disestablishment of the Church of England
Antidisestablishmentarianism
28
Aminopolycarboxylic acids, better known as EDTA, and are used as a chelating agent
Ethylenediaminetetraacetates
27
Recording electrical activity in the brain via electrodes placed on the scalp
Electroencephalographically
26
A technique where substances are identified using radioactive labels on antigens or antibodies
Radioimmunoelectrophoresis
25
Precipitation in agar under an electric field
Immunoelectrophoretically
25
A class of phospholipids found in biological membranes
Phosphatidylethanolamines
24
Measures taken to offset or negate a countermeasure
Counter-counter-measures
24
Nontoxic and nonflammable gases used in air conditioning and refrigeration systems
Dichlorodifluoromethanes
24
Recording the electrical activity of the heart
Electrocardiographically
24
People who measure electrical activity in certain parts of the brain
Electroencephalographers
24
Multiple recordings of electrical activity in the brain
Electroencephalographies
24
Multiple instances of communication and understanding through a language barrier
Intercomprehensibilities
24
Describing actions performed during a technique which studies the movement of microscopic particles under an electric field using a microscope
Microelectrophoretically
24
Multiple instances of a technique which analyzes microscopic samples using light
Microspectrophotometries
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