Below is a list of potential QWERTY keyboard 'typos' (typing mistakes) for the phrase 'smiffys', from the free online typo generator. Enter another phrase to see possible typing errors, or select from one of the "top typos" charts.
Original
smiffys
Transposition0
msiffys
simffys
smfifys
smifyfs
smiffsy
Transposition1
imsffys
sfimfys
smffiys
smiyffs
smifsyf
Transposition2
fmisfys
sfifmys
smyffis
smisfyf
Transposition2r
fimsfys
sffimys
smyffis
smisyff
Transposition0x2
msfifys
msiffys
msifyfs
msiffsy
simffys
simfyfs
simffsy
smfiyfs
smfifsy
smiffsy
Slip3A
misffys
sifmfys
smffiys
smifyfs
smifysf
Slip3B
ismffys
sfmifys
smfifys
smiyffs
smifsfy
Omission
miffys
siffys
smffys
smifys
smiffs
smiffy
Repetition
ssmiffys
smmiffys
smiiffys
smifffys
smiffyys
smiffyss
QWERTY Substitution
amiffys
dmiffys
sniffys
smuffys
smoffys
smidfys
smigfys
smifdys
smifgys
smiffts
smiffus
smiffya
smiffyd
QWERTY Repetition after
samiffys
sdmiffys
smniffys
smiuffys
smioffys
smifdfys
smifgfys
smiffdys
smiffgys
smiffyts
smiffyus
smiffysa
smiffysd
QWERTY Repetition before
asmiffys
dsmiffys
snmiffys
smuiffys
smoiffys
smidffys
smigffys
smifdfys
smifgfys
smifftys
smiffuys
smiffyas
smiffyds
QWERTY Substitution Transposed
maiffys
aimffys
amfifys
amifyfs
amiffsy
mdiffys
dimffys
dmfifys
dmifyfs
dmiffsy
nsiffys
sinffys
snfifys
snifyfs
sniffsy
msuffys
sumffys
smfufys
smufyfs
smuffsy
msoffys
somffys
smfofys
smofyfs
smoffsy
msidfys
simdfys
smdifys
smifdys
smidyfs
smidfsy
msigfys
simgfys
smgifys
smifgys
smigyfs
smigfsy
msifdys
simfdys
smfidys
smidfys
smifyds
smifdsy
msifgys
simfgys
smfigys
smigfys
smifygs
smifgsy
msiffts
simffts
smfifts
smiftfs
smiffst
msiffus
simffus
smfifus
smifufs
smiffsu
msiffya
simffya
smfifya
smifyfa
smiffay
msiffyd
simffyd
smfifyd
smifyfd
smiffdy
WrongDoubles
smiifys
smifyys
$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