Floccinaucinihilipilification, the declaration of an item being useless, is the longest non-medical term in the English language.
125
Longest officially recognized place name is Taumatawhakatangihangakoauauotamateapokaiwhenuakitanatahu.
112
If you mouth the word "colorful" to someone, it looks like you are saying "I love you".
634
The word "listen" contains the same letters as "silent."
135
"Stewardesses" is the longest word that is typed with only the left hand.
384