Appendix:English isograms

An isogram is a word with no letters repeated within the word. There are many isograms in English, but some of the longer ones are disputed. The word subdermatoglyphic, for example, was coined to mean "of or relating to the area of skin directly below the fingerprint", though it has not yet entered usage.

11 letters

 * abolishment
 * atmospheric
 * backgrounds
 * campgrounds
 * complainers
 * countryside
 * dangerously
 * disgraceful
 * disturbance
 * documentary
 * explicatory
 * facetiously
 * forecasting
 * fracedinous
 * filmography
 * fluoridates
 * goldfinches
 * hamstringed
 * inculpatory
 * juxtaposing
 * keyboardist
 * lumberjacks
 * misanthropy
 * nefariously
 * obfuscating
 * palindromes
 * personality
 * playgrounds
 * playwrights
 * precautions
 * predictably
 * questionary
 * regulations
 * republicans
 * semordnilap
 * shedworking
 * speculation
 * stenography
 * subordinate
 * Switzerland
 * trampolines
 * undesirably
 * vinotherapy
 * vouchsafing
 * workmanship
 * xenoplastic
 * yachtswomen
 * zygomaticus

12 letters

 * absorptively
 * adjunctively
 * ambidextrous
 * antiblockers
 * backswordmen
 * bankruptcies
 * beclamouring
 * blastodermic
 * bluestocking
 * bodysnatcher
 * breastplough
 * chimneyboard
 * configurated and configurates
 * considerably
 * counterplays
 * demographics
 * demonstrably
 * discountable
 * discrepantly
 * dismountable
 * disreputably
 * drumbeatings
 * exclusionary
 * exculpations
 * exhaustingly
 * farsightedly
 * flowcharting
 * francophiles
 * granulocytes
 * gunpowderish
 * housewarming
 * hypnotizable or hypnotisable
 * imponderably
 * incomputable and incomputably
 * kinetographs
 * lexicography
 * lycanthropes
 * malnourished
 * mendaciously
 * metalworking
 * misconjugate
 * multipronged
 * neurotypical
 * nightwalkers
 * overhaulings
 * overstudying
 * packinghouse
 * patchworking
 * policymakers
 * postbuckling
 * productively
 * questionably
 * recognizably or recognisably
 * shopbreaking
 * stenographic
 * superkingdom
 * thunderclaps
 * unforgivable and unforgivably
 * unimprovable and unimprovably
 * unmethodical
 * unproclaimed
 * unprofitable and unprofitably
 * upholstering
 * voluntaryism
 * webliography
 * xylographies
 * zanthoxylums

13 letters

 * chimneyboards
 * consumptively
 * copyrightable
 * cyberstalking
 * documentarily
 * draughtswomen
 * endolymphatic
 * flamethrowing
 * hydromagnetic
 * hypnotizables
 * hypsometrical
 * lycanthropies
 * metalworkings
 * misconjugated
 * motherfucking
 * multibranched
 * musicotherapy
 * pneumogastric
 * reticulophagy
 * salpingectomy
 * semivoluntary
 * shockumentary
 * subordinately
 * sycophantized
 * troublemaking
 * unpredictably
 * unproblematic
 * unsympathized

14 letters

 * ambidextrously
 * doubletracking
 * dermatoglyphic
 * hydromagnetics
 * hydropneumatic
 * hyperabduction
 * neurolymphatic
 * outspreadingly
 * pseudomythical
 * shlockumentary
 * subdemographic
 * troublemakings
 * undiscoverably

15 letters

 * dermatoglyphics
 * hydropneumatics
 * hyperosculating
 * motherfuckingly
 * uncopyrightable

16 letters

 * uncopyrightables