Common Mistakes in Written English 9 - Spelling

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Notes & Exercises

It's important to spell correctly. Here are some commonly misspelled words with explanatory notes to help you learn to spell them correctly.

•  accessory    noun
Spell accessory with a double c and a double s ; the ending is -ory .
Rule: Change the -y to -ies to make the plurals of words which end in a consonant plus -y accessories.

•  accommodate    verb
Spell accommodate with a double c and a double m ; remember that there is an o before and after the m 's.
Related word: accommodation noun

•  address    noun and verb
Spell address with a double d.

•  aggression    noun
Remember that aggression is spelled with a double g and a double s .
Related words: aggressive adjective aggressor noun

•  alcohol    noun
Spell alcohol with alco- at the beginning.

•  amend    verb
Remember that amend and the related word amendment are spelled with a single m at the beginning.

•  apologize or apologise    verb
Spell apologize and the related word apology with -olo- in the middle.

•  apparent    adjective
There is a double p in apparent but only one r ; the ending is -ent .

•  argument    noun
There is no e after the u in argument, even though it comes from argue .

•  average    noun and verb
Spell average with an e after the v ; the ending is -age .

•  beautiful    adjective
Remember that beautiful and the related words beauty and beautify are spelled with beau- at the beginning.

•  burglar    noun
Spell burglar with -lar at the end.
Related word: burglary noun

•  business    noun
Remember that business begins with busi- .

•  committee    noun
Spell committee with a double m , a double t , and a double e at the end.

•  consensus    noun
Remember that consensus and the related word consensual are spelled with -sen- in the middle.

•  controversy    noun (plural controversies )
Remember that controversy is spelled with -ro- in the middle.
Related word: controversial adjective

•  disappoint    verb
Remember that disappoint and the related word disappointment are spelled with one s and a double p .

•  eighth    adjective
Remember that eighth is spelled with -hth at the end.

•  embarrass    verb
Remember that embarrass and the related word embarrassment have a double r and a double s .

•  extraordinary    adjective
Spell extraordinary with extra- at the beginning (it is made up of the words extra and ordinary ).

•  extreme    adjective and noun
Remember that the ending of extreme is spelled -eme .

•  friend    noun
Spell friend with -ie- in the middle.

•  grateful    adjective
Remember that grateful begins with grate- .

•  immediate    adjective
Spell immediate with a double m .
Related word: immediately adverb

•  independent    adjective and noun
Remember that independent always ends with -ent .
Related word: independence noun

•  instalment    noun
Spell instalment with one l (the spelling installment is American).

•  maintenance    noun
Remember that maintenance is spelled with -ten- in the middle; the ending is -ance .

•  millennium    noun
Spell millennium with a double l and a double n . The plural can be spelled either
Related word: millennial adjective

•  misspell    verb
Spell misspell with a double s . The different forms of this verb are: misspells , misspelling ; the past tense is misspelt or misspelled .

•  naive    adjective
Remember that naive is spelled with -ai- in the middle.
Related word: naivety noun

•  necessary    adjective
Remember that necessary and the related word necessity are spelled with one c and a double s .
Related word: necessarily adverb

•  occasion    noun and verb
Spell occasion with a double c and a single s .

•  occur    verb
Rule: Double the last letter 'r': occurs , occurring , occurred .
Related word: occurrence noun

•  original    adjective and noun
Spell original with an i before and after the g .

•  potato    noun
The plural of potato is made by adding -es : potatoes .

•  practice    noun
Do not confuse practice with practise . Practice is a noun meaning 'the action of doing something rather than the theories about it' ( putting policy into practice ), whereas practise is a verb meaning 'do something repeatedly to improve your skill' ( they were practising for the Olympics ). In American English, both the noun and the verb are spelled practice .

•  questionnaire    noun
Remember that questionnaire (a French word) is spelled with a double n and ends with -aire .

•  really    adverb
Remember that really is spelled with a double l .

•  receive    verb
Rule: i before e except after c .

•  recommend    verb
Spell recommend and the related word recommendation with a single c and a double m .

•  restaurant    noun
Remember that restaurant is spelled with -au- between the t and r : it is a French word.

•  secretary    noun (plural secretaries )
Spell secretary with an e after the r ; the ending is -ary .

•  separate    verb and adjective
Remember that separate is spelled with -par- in the middle.
Related word: separation noun

•  similar    adjective
Remember that the ending of similar is spelled -lar .
Related word: similarity noun similarly adverb

•  sufficient    adjective
Spell sufficient with a double f ; the ending is -cient .

•  surprise    verb and noun
Remember that surprise has an r before and after the p . Unlike most verbs ending in -ise , it cannot be spelled with an -ize ending.

•  tomato    noun
The plural of tomato is made by adding -es : tomatoes .

•  tomorrow    adverb and noun
Spell tomorrow with a single m and a double r .

•  truly    adverb
Rule: Truly is formed from true plus the ending -ly ; it is one of a group of words in which the final silent e is dropped before adding -ly .

•  twelfth    number
Remember that twelfth has an f in the middle.

•  unfortunately    adverb
Spell unfortunately with -ately at the end (it is made up of the adjective unfortunate plus the ending -ly ).

•  until    preposition and conjunction
Spell until with a single l .

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Notes & Exercises