Pneumonoultramicroscopicsilicovolcanoconiosis- according to the Oxford English Dictionary (OED) - is a word alleged to mean 'a lung disease caused by the inhalation of very fine silica dust, causing inflammation in the lungs'.
The word contains 44 letters.
Nonmodal is MAYBE the longest word.
Youthfulness is the longest word starting with the letter Y. It contains twelve letters.
lethargic
The longest word starting with E is Electroencephalographically.
There is no 8-letter common word. The longest are 6 letters: opiate, payoff, teapot, and tiptoe.(also a 7-letter archaic term taffety, meaning taffeta)
Bellybuttons would be the longest word I can think of beginning with a 'b' and ending in an 's'.
Biotechnological
Acetylcholinesterase is a 20 letter word. It is a chemical compound.
Nghiên - meaning "inclined". 7 letters. That's the longest one-syllable word in Vietnamese
The 29-letter word is correctly spelled floccinaucinihilipilification.It is considered the longest non-technical word in the English language, old but nonetheless a created word, with the meaning "regarding something as unimportant".
KANGAROO
forethoughtfulness