Below is a list of potential QWERTY keyboard 'typos' (typing mistakes) for the phrase 'fitness', from the free online typo generator. Enter another phrase to see possible typing errors, or select from one of the "top typos" charts.
Original
fitness
Transposition0
iftness
ftiness
fintess
fitenss
fitnses
Transposition1
tifness
fntiess
fientss
fitsens
fitnsse
Transposition2
nitfess
fetniss
fisnets
fitsesn
Transposition2r
ntifess
fentiss
fisents
fitssen
Transposition0x2
ifntess
iftenss
iftnses
iftness
ftienss
ftinses
ftiness
fintses
fintess
fitenss
Slip3A
itfness
ftniess
finetss
fitesns
fitnsse
Slip3B
tfiness
fnitess
fietnss
fitsnes
fitnses
Omission
itness
ftness
finess
fitess
fitnss
fitnes
Repetition
ffitness
fiitness
fittness
fitnness
fitneess
fitnesss
QWERTY Substitution
ditness
gitness
futness
fotness
firness
fiyness
fitbess
fitmess
fitnwss
fitnrss
fitneas
fitneds
fitnesa
fitnesd
QWERTY Repetition after
fditness
fgitness
fiutness
fiotness
fitrness
fityness
fitnbess
fitnmess
fitnewss
fitnerss
fitnesas
fitnesds
fitnessa
fitnessd
QWERTY Repetition before
dfitness
gfitness
fuitness
foitness
firtness
fiytness
fitbness
fitmness
fitnwess
fitnress
fitneass
fitnedss
fitnesas
fitnesds
QWERTY Substitution Transposed
idtness
dtiness
dintess
ditenss
ditnses
igtness
gtiness
gintess
gitenss
gitnses
uftness
ftuness
funtess
futenss
futnses
oftness
ftoness
fontess
fotenss
fotnses
ifrness
friness
finress
firenss
firnses
ifyness
fyiness
finyess
fiyenss
fiynses
iftbess
ftibess
fibtess
fitebss
fitbses
iftmess
ftimess
fimtess
fitemss
fitmses
iftnwss
ftinwss
fintwss
fitwnss
fitnsws
iftnrss
ftinrss
fintrss
fitrnss
fitnsrs
iftneas
ftineas
finteas
fitenas
fitnaes
fitnesa
iftneds
ftineds
finteds
fitends
fitndes
fitnesd
iftnesa
ftinesa
fintesa
fitensa
fitnsea
fitneas
iftnesd
ftinesd
fintesd
fitensd
fitnsed
fitneds
WrongDoubles
fitnees
$JSON
$address
$applyDefault
$clone
$commas
$copy
$copyFields
$delete
$entries
$expand
$filt
$getType
$isArray
$isBoolean
$isClass
$isDate
$isElement
$isFunction
$isNumber
$isObject
$isString
$isType
$isValidDate
$json2txt
$keys
$load
$matchall
$parseFloats
$pick
$postJSON
$prune
$save
$set
$sortBy
$stringify
$sum
$svgPoster1
$textify
$toFixed
$type
$without
Glossary
Transposition = adjacent pairs of letters are swapped
Omission = individual letters are missed out
Repetition = individual letters are entered twice consecutively
QWERTY substitution = letters are replaced by each of their QWERTY-keyboard based physical neighbours (e.g. 'h' gets replaced with y, u, j, n, b, g)
QWERTY repetition type 1 = letters are followed by each of their QWERTY-keyboard neighbours
QWERTY repetition type 2 = letters are preceded by each of their QWERTY-keyboard neighbours