The possessive apostrophe should be easy. Take the words, and ‘s to it. Like this:

The Possessive Apostrophe

This rule will take you a long way, but it’s not always that simple.

Words that already end in an ‘s’

If you are adding the ‘s to a word that already ends in an s it becomes trickier. Now you need to decide if the word ending in ‘s’ is singular or plural. Boss is singular, bosses is plural. Hypothesis is singular, girls is plural.

If it is singular, like ‘boss’ in the example above, follow the usual rule – add the ‘s.

If it is plural, you have to take care. See below:

The Possessive Apostrophe

Hypotheses don’t have friends

Hypotheses don’t have friends, so here’s another illustration:

The Possessive Apostrophe

This is incidentally, a very good example of where it is better to avoid the use of the apostrophe altogether, even when it is grammatically correct. It is much better to say:

Don’t assume that a more sophisticated sentence construction is necessarily better, or will make you look cleverer. Not so. Readability is king.

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August 8, 2010


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