Below is a list of potential QWERTY keyboard 'typos' (typing mistakes) for the phrase 'extension', from the free online typo generator. Enter another phrase to see possible typing errors, or select from one of the "top typos" charts.
Original
extension
Transposition0
xetension
etxension
exetnsion
extnesion
extesnion
extenison
extensoin
extensino
Transposition1
txeension
eetxnsion
exnetsion
extsneion
exteisnon
extenoisn
extensnoi
Transposition2
entexsion
exsention
extinseon
exteosinn
extennios
Transposition2r
etxension
enetxsion
exsnetion
extisneon
exteoisnn
extennois
Transposition0x2
xeetnsion
xetnesion
xetesnion
xetenison
xetensoin
xetensino
etxnesion
etxesnion
etxenison
etxensoin
etxensino
exetsnion
exetnison
exetnsoin
exetnsino
extneison
extnesoin
extnesino
extesnoin
extesnino
extenisno
Slip3A
xteension
etexnsion
exentsion
extnseion
extesinon
exteniosn
extensoni
Slip3B
texension
eextnsion
exntesion
extsenion
exteinson
extenosin
extensnio
Omission
xtension
etension
exension
extnsion
extesion
extenion
extenson
extensin
extensio
Repetition
eextension
exxtension
exttension
exteension
extennsion
extenssion
extensiion
extensioon
extensionn
QWERTY Substitution
wxtension
rxtension
eztension
ectension
exrension
exyension
extwnsion
extrnsion
extebsion
extemsion
extenaion
extendion
extensuon
extensoon
extensiin
extensipn
extensiob
extensiom
QWERTY Repetition after
ewxtension
erxtension
exztension
exctension
extrension
extyension
extewnsion
externsion
extenbsion
extenmsion
extensaion
extensdion
extensiuon
extensioon
extensioin
extensiopn
extensionb
extensionm
QWERTY Repetition before
wextension
rextension
ezxtension
ecxtension
exrtension
exytension
extwension
extrension
extebnsion
extemnsion
extenasion
extendsion
extensuion
extensoion
extensiion
extensipon
extensiobn
extensiomn
QWERTY Substitution Transposed
xwtension
wtxension
wxetnsion
wxtnesion
wxtesnion
wxtenison
wxtensoin
wxtensino
xrtension
rtxension
rxetnsion
rxtnesion
rxtesnion
rxtenison
rxtensoin
rxtensino
zetension
etzension
ezetnsion
eztnesion
eztesnion
eztenison
eztensoin
eztensino
cetension
etcension
ecetnsion
ectnesion
ectesnion
ectenison
ectensoin
ectensino
xerension
erxension
exernsion
exrnesion
exresnion
exrenison
exrensoin
exrensino
xeyension
eyxension
exeynsion
exynesion
exyesnion
exyenison
exyensoin
exyensino
xetwnsion
etxwnsion
exwtnsion
extnwsion
extwsnion
extwnison
extwnsoin
extwnsino
xetrnsion
etxrnsion
exrtnsion
extnrsion
extrsnion
extrnison
extrnsoin
extrnsino
xetebsion
etxebsion
exetbsion
extbesion
extesbion
extebison
extebsoin
extebsino
xetemsion
etxemsion
exetmsion
extmesion
extesmion
extemison
extemsoin
extemsino
xetenaion
etxenaion
exetnaion
extneaion
exteanion
exteniaon
extenaoin
extenaino
xetendion
etxendion
exetndion
extnedion
extednion
extenidon
extendoin
extendino
xetensuon
etxensuon
exetnsuon
extnesuon
extesnuon
extenuson
extensoun
extensuno
xetensoon
etxensoon
exetnsoon
extnesoon
extesnoon
extenoson
extensono
xetensiin
etxensiin
exetnsiin
extnesiin
extesniin
extenisin
extensini
xetensipn
etxensipn
exetnsipn
extnesipn
extesnipn
extenispn
extenspin
extensinp
xetensiob
etxensiob
exetnsiob
extnesiob
extesniob
extenisob
extensoib
extensibo
xetensiom
etxensiom
exetnsiom
extnesiom
extesniom
extenisom
extensoim
extensimo
WrongDoubles
$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