travel

The word travel has come to exemplify a common spelling quandary: to double or not to double the final consonant of a verb before adding the ending that forms the past tense ( –ed ) or the ending that forms the present-participle ( –ing. ) We see it done both ways—sometimes with the same word ( travel, traveled, traveling; travel, travelled, travelling ). As readers, we accept these variations without even thinking about them. But as writers, we need to know just when we should double that final consonant and when we should not. Because American practice differs slightly from British practice, there is no one answer. But there are well-established conventions.

In American writing, when you have a one-syllable verb that ends with a single vowel followed by a single consonant, and you want to add a regular inflectional ending that begins with a vowel, you double that final consonant before adding -ed or -ing. stop, stopped, stopping; flag, flagged, flagging. This principle also holds for verbs of more than one syllable if the final syllable is stressed: permit, permitted, permitting; refer, referred, referring. If that syllable is not stressed, there is no doubling of the final consonant: gallop, galloped, galloping; travel, traveled, traveling.

And yet at his trial he was accused of travelling to Ireland in order to provoke the Easter Rising.

On another trip, to Pakistan, travelling in the deserts of Sindh I came across the Shah Jo Raag Fakirs.

Modern neuroscientists, it seems, are travelling the same path as earlier investigators.