Words of one syllable, ending with one consonant preceded by one vowel, double that consonant on adding -ed or -ing: e.g.
Words of more than one syllable, ending with one consonant preceded by one vowel, and accented on the last syllable, double that consonant on adding -ed or -ing: e.g.
But words of this classnotaccented on the last syllable,do not double the last consonant[25]on adding -ed, -ing: e.g.
balloted, -ingbanqueted, -ingbayoneted, -ingbenefited, -ingbiased, -ingbilleted, -ingbishoped, -ingblanketed, -ingbonneted, -ingbracketed, -ingbuffeted, -ing
carpeted, -ingchirruped, -ingcombated, -ingcricketingcrocheted, -ingcrotcheted, -ing, -ydiscomfited, -ingdocketed, -ingfaceted, -ingferreted, -ingfidgeted, -ing, -y
filleted, -ingfilliped, -ingfocused, -inggalloped, -inggibbeted, -inggossiped, -ing, -yinitialed, -ingjunketed, -ingmarketed, -ingpacketed, -ingparalleled, -ingpelleted, -ingpicketed, -ingpiloted, -ing
profited, -ingrabbeted, -ingrabbitingricketyriveted, -ingrusseted, -ing, -yscolloped, -ingtennisingtrinketed, -ingtrousered, -ingtrumpeted, -ingvelvetyvisited, -ingwainscoted, -ing
In words ending in-l, the final consonant is generally doubled, whether accented on the last syllable or not: e.g.
annulled, -ingappalled, -ingapparelled, -ingbarrelledbethralled, -ingcaballed, -ingchannelled, -ingcompelled, -ingcudgelled, -ingdishevelled, -ingempanelled, -ingextolled, -ingforestalled, -inggrovelled, -ing
impelled, -inginstalled, -ingkennelled, -inglevelled, -inglibelled, -ingmarshalled, -ingparcelled, -ingquarrelled, -ingrevelled, -ingrivalled, -ingshovelled, -ingtrammelled, -ingtravelled, -ingtunnelled, -ing
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