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Old 24th April 2012, 22:01
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Quote:
Originally Posted by pre65 View Post
railbusi (plural of railbus ? )
Nice try, but the plural of railbus can only be railbuses.

Some words derived from the Latin and ending in -us can be made plural by changing the ending to -i, so railbus would be railbi; but railbus is not a Latin noun. It is formed from the prefix rail- and the suffix -bus, which is itself a contraction of omnibus, being the dative plural case of omes, all, and meaning for all. So while railbus may sound like a Latin noun of the second declension, it ain't, and can't be declined like one.

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