One syllable words ending in a single -s or a single -z preceded by a vowel
may double the final consonant before adding -es, BUT the practice varies.
bus/buses OR busses
gas/gases or gasses

Vanagon content: The buses/busses on the trail may use a variety of
gases/gasses...

>There is no such thing as a "proper" dictionary.  Languages evolve rapidly,
>and a dictionary is just a compilation of currently accepted usage.  An
>electronic dictionary is far more likely to be current than an
>old-fashioned and obsolete printed dictionary.
>
>>It is a sad day when MS Word is considered an authority on how things
>>should be spelled.  Use a proper dictionary please! :)
>>
>>
>>Pat N8VW
>>
>>> I guess I shoulda looked it up on MS Word.
>>