No, it is not. Pneumonoultramicroscopicsilicovolcanoconiosis is.
antidisestablishmentarianism
In the English language try ' Antidisestablishmentarianism' ;,
I remember when people claimed that "antidisestablishmentarianism" was the longest English word, so it may still be the longest one beginning with the letter "a". The longest word in the English language which starts with the letter 'A' is <a class="h2heading h3" style="color: rgb(0, 0, 0);" name="antidisestablishmentarianism.">antidisestablishmentarianism.</a> (See Related links below) antidisestablishmentarianism
There is no word in the English language with 19 syllables. The longest word is "antidisestablishmentarianism," and even that word only has 12.
Evidently you are trying to spell the longest "real" word in the English language. It is spelt "antidisestablishmentarianism".
The 45 letter word Pneumonoultramicroscopicsilicovolcanoconiosis is the longest constructed word that appears in major dictionaries. Antidisestablishmentarianism, at 28 letters, is the longest non-technical English word.
Antidisestablishmentarianism is the 8th biggest word in the world.
Supercalifragilisticexpealidotious is not a word in any language. It came from Mary Poppins and is completely made up. The longest word in the English language is Antidisestablishmentarianism if you exclude technical and coined words.
Inadvertadly
The word "antidisestablishmentarianism" has 28 letters. This word refers to a political position that originated in 19th-century Britain. It is known for being one of the longest words in the English language.
The longest word in the English language, according to the Guinness World Records, is pneumonoultramicroscopicsilicovolcanoconiosis. It has 45 letters and refers to a type of lung disease caused by inhaling very fine silica dust. However, it should be noted that this word is not commonly used in everyday language.
The longest word ending with "tion" in the English dictionary is "antidisestablishmentarianism." It's a mouthful, I know. But hey, at least now you can impress your friends with your knowledge of ridiculously long words.