5. The fulfill / fulfil group (2)

5. The fulfill / fulfil group (2)

In American spelling, when you add a suffix like -ing, -ed, or -er to a word, you double the final consonant only if the stress falls on the second syllable of the root word. Thus, as in British English, the verb 'pat-rol' gives 'patrolling' and 'patrolled'. On the other hand, the verb 'trav-el' becomes 'traveling', 'traveled', 'traveler' (GB 'travelling', 'travelled', 'traveller'). Some further examples: Click here to see the full text.  

AE	BE
canceled, cancelled	cancelled
counseled, counselled	counselled
equaled, equalled	equalled
fueled, fuelled	fuelled
groveling, grovelling	grovelling
leveled, levelled	levelled
modeling, modelling	modelling
quarreling, quarrelling	quarrelling
worshiper, worshipper	worshipper