The word "travellings" is not a correct spelling in standard English. The correct spelling is "travelings," which is pronounced /ˈtrævəlɪŋz/. The reason for the double "l" is due to the addition of the suffix "-ing" to the base word "travel." This suffix requires doubling the final consonant if the base word ends in a vowel followed by a consonant. Therefore, "travel" becomes "travelling" and "traveler" becomes "traveller." Always remember to check the spelling of unfamiliar words in a reliable dictionary.