Inadvertadly
antidisestablishmentarianism
Inadvertently
set
No, it is not. Pneumonoultramicroscopicsilicovolcanoconiosis is.
Is, and/or In
I have heard that the word "set" has the longest entry in the Oxford Dictionary because of the many different meanings it has.
The longest word in the English dictionary is Pneumonoultramicroscopicsilicovolcanoconiosis. This is a lung disease.
pseudopseudohypoparathyroidism (30 letters).The longest word in the Oxford English Dictionary is the 45 letter word pneumonoultramicroscopicsilicovolcanoconiosis.According to the dictionary it is a lung disease causing inflammation of the lung from the inhalation of fine silica dust.
The longest word in the English language with only one vowel is "strengths," containing nine letters and only one vowel, which is the letter "e."
No, the spelling is Pneumonoultramicroscopicsilicovolcanoconiosis.
INDUSTRIALIZATION
De-inhibition, is widely used in the English language but has no dictionary definition as it is not a real word.
set.
supercalifragalisticexpialidocious
I think you could make the argument that the word "pointless", by definition, is the most pointless word in the English Dictionary.