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Writing Proper

By Giulia de Cesare, Senior Trainer

Getting the most out of the Grammar Checker in Microsoft Word

The grammar checker in Microsoft Word can be a powerful helper for any writer – so long as you take care setting it up.

If you don't, it can be a serious annoyance, underlining word after word with green wavy lines – leading many to switch the function off altogether.

So let's look at how to get the most out of Word's grammar checker.

First Steps (Word versions prior to Office 2007)

First Steps (Word versions for Office 2007 onwards)

Writing Style

At the top of the ‘Grammar Settings’ window is a drop down menu that allows you to choose a writing style – Casual, Standard, Formal, Technical or Custom.

I recommend you select ‘Custom’ and go through the list of options that appear further down the ‘Grammar Settings’ window, ticking those grammar and style rules you feel are useful and un-ticking those you don't.

A grammar checker that fits your style

Do this and you'll have a grammar checker that fits your style – and not a rigid stickler to formality that bears little relevance to the real world of writing.

Okay, let's work our way down the list and sort out which options, help, hinder, or just plain annoy…

The first set of options asks whether you want:

Now let's move on to the ‘Grammar’ options:



It's helpful if you forget to capitalise the first word of a sentence or omit to make the ‘e’ in ‘England’ a capital letter. It also detects over-use of capitalisation.

Commonly Confused Words


It's useful if you inadvertently confuse words like ‘their’ and ‘there’, or ‘desert’ and ‘dessert’ (I'm sure you don't, but there may be less common words you do sometimes confuse).

Hyphenated and Compound Words


I never know whether to slot in a hyphen in terms like ‘3-year plan’. Fortunately, Word lets you know you need a hyphen between ‘3’ and ‘year’.

Misused Words

You decide

This option isn't perfect, but it will highlight instances where you could choose a more appropriate word to make a sentence clearer or more correct.


Don't tick

Unless you're likely to write: ‘I can't hardly believe that’, or ‘I don't need no advice’.



It tells you when numbers should be spelled out (‘nine’ instead of ‘9’). And vice versa (‘14’ instead of ‘fourteen’).

Passive Sentences

You decide

Flags the use of passive voice and, where possible, suggests an alternative sentence written in active voice. Don't accept Word's alternatives too often, however, otherwise your writing can become flat and robotic sounding

Possessives and Plurals


It makes sure your use of apostrophe is correct: e.g. ‘the car's exhaust system’ (singular), ‘cars' exhaust systems’ (plural). It also highlights instances where you have forgotten to use an apostrophe.


You decide

It highlights incorrect use of punctuation (you might have used a comma, where a semi-colon would be more appropriate). This can be helpful, but more often than not, it's confusing.

Relative Clauses

You decide

Tells you when you should have used ‘which’ instead of ‘who’ when referring to things; or when you should have used ‘who’ instead of ‘which’ when referring to people. This can be useful, but sometimes rules have to be broken in the interests of a sentence sounding right.

Sentence Structure

You decide

Highlights sentence fragments, overuse of conjunctions (‘and’, ‘or’, etc), or when you've shifted between active and passive voice in a single sentence. It also flags when you've phrased a question wrongly. Again, the problem with this rule is that rules sometimes have to be broken. For example, advertising copywriters regularly use sentence fragments because they make sentence and paragraph structure more lively and compelling.

Sentence-Verb Agreement


This is handy for catching typing errors like this: ‘The book are full of mistakes’.

Verb and Noun Phrases


Highlights incorrect use of verb and noun phrases and catches typos like ‘These five machine’, which should read ‘These five machines’.

Now we come to the ‘Style’ options:


Don't tick

Used sparingly clichés can make your writing more effective; they help you ‘speak the language’ of your target audience.


Don't tick

This highlights instances where you've used ‘don't’ instead of ‘do not’. You'd obviously select this option if you were writing for a very formal audience. Most audiences, however, prefer writing that sounds conversational and are quite happy with ‘don't’ and ‘they've’.


You decide

Select this option only if you are unsure when you are using colloquialisms (informal figures of speech, which are ‘conversational’ in tone). Again, intelligent use of colloquialisms helps you relate to your target readers.

Gender-Specific Words


Flags use of sexist language, such as ‘chairman’ and ‘chairwoman’.



If you're writing for a general audience and find yourself using technical, business, or industry jargon, you need to select this option.

Sentence length


Flags sentences longer than 60 words. Long sentences send readers to sleep, so it's helpful to be reminded to keep your sentences short.

Sentences Beginning with ‘And’, ‘But’, and ‘Hopefully’

Don't tick

Language is continually changing and these days starting sentences with conjunctions like ‘And’ and ‘But’ is fine – unless you're writing for a very formal audience.

Successive Nouns (more than three)


Flags instances where you've strung too many nouns together in a sentence: e.g. ‘Internet business marketing communications consultancy.’ You need to avoid this kind of writing as it confuses people.

Successive Prepositional Phrases (more than three)


Highlights sentences like this: ‘The book on the shelf in the corner at the library on the edge of town was checked out.’ Sentences that use ‘in’, ‘at’, ‘an’ and ‘on’ a lot make prose sound lifeless. So it's wise to spend time rephrasing them.

Unclear Phrasing


Flags ambiguous phrases like: ‘All of the departments did not file a report’, which would work better as, ‘Not all departments filed a report’.

Use of First Person

You decide

Flags the pronouns ‘I’ and ‘me’. Technical writers might find this useful, as they don't usually write in the first person.



Even the best of us manage to include redundant words in our prose. This will help you weed them out.

Words in Split Infinitives (more than one)

Don't tick

The average reader doesn't know or worry about split infinitives. Only tick this if your readers happen to be sticklers for precise grammar.

If you have any of your own tips for improving Word's grammar checker, please email us at:

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