Here are some 22-letter English words :
(you can find more, of varying lengths, at the related links)
counterrevolutionaries
deinstitutionalization
electroencephalography (EEG)
intercomprehensibility
microspectrophotometry
otorhinolaryngological
polytetrafluorethylene (also polytetrafluoroethylene : Teflon)
reinstitutionalization (reverse of #2)
transubstantiationists
Yes, There Are Lots, But Just To Name A Few...
Radiopharmaceutical
Ultracentrifugation
Anthropomorphically
Electromagnetically
The letters spell the word rabbit. The word uses all 6 letters taribb.
Afar is a four letter word with f and a as the 2 middle letters in that order.
There is unlikely to be a single word that contains all these letters but the phrase 'physical education' uses all the letters.
-anne.o-
The letters spell the word advance. They also spell acne, cave, dance and vane.
chromolithographer (18 letters) counterdemonstrator (19 letters)
There are 19 common words made from the letters in CUPCAKE :aaceapeaukcakecapcapecuecuppapacepackpeapeakpeckpucepuckpukeup
Phenylpropanolamine.
There are many words of 20 letters including: Anarchoindividualist, barothermohygrograph, consubstantiationist, disestablismentarian, electrocardiographic, hyperphosphorescence, intellectualizations, nonmaterialistically, uncharacteristically.
Newtownmountkennedy which has 19 letters in it.
Yes, what is a word with four letters in it. Yes, "what" is a word with four letters in it.
The letters spell the word gravid. The word uses all six letters.
The letters spell the word presidents. The word uses all ten letters.
The letters spell the word rabbit. The word uses all 6 letters taribb.
The letters spell the word python. The word uses all six letters.
There are 10 letters in the word "California."
ten degrees ten degrees degree of declination (19 letters to fit in your crossword puzzle) magnetic declination