Here is a UK web page that lays out English spelling rules. The applicable ones seem to be:
The one that applies to mail, mailing• Do NOT double the final consonant when the base word has two vowels or two final consonants, e.g. leaf, leafy; shout, shouting; fool, foolish; self, selfish; mend, mending. [They don't say this, but they seem to mean when two vowels are pronounced as one, form a diphthong.]The one that applies to dial, dialling (Dial is a two-syllable word.):
Among those examples only "shout" is a diphthong /au/. And that's why mail doesn't duplicate, ok.[Doubling L in multisyllabic words before suffixes] • In words ending in a single ‘l’ after a single vowel, double the ‘l’ before adding a suffix regardless of accent. • e.g. cancelled, levelling, travelled, signalling, metallic.
I agree with that.
Add: di-al has two syllables. The last syllable, -al has a single vowel (a), so this rule applies to it. The rule would be clearer if it said, "a single vowel in the final syllable."
Absolutely not. Every phonetic transcription I have looked up gives dial as a monosyllabic word with a tripthong /aie/. (Sorry I can't write schwas).
Of course, I can't speak to what your dictionaries are telling you, but:Absolutely not. Every phonetic transcription I have looked up gives dial as a monosyllabic word with a tripthong /aie/. (Sorry I can't write schwas)
How about develop (developped)?In British spelling, exceptionally, and unlike in American spelling, verbs ending in
- single vowel + l or
- single vowel + p
double the consonant REGARDLESS of whether the verb is a monosyllable or not, and REGARDLESS of whether the last syllable is stressed or not: levelled, worshipped, kidnapped, equalling, cavilling. I wonder whether this complication, affecting verbs ending in -l, caused the confusion that gave rise to dialled.
Surely quitting is regular? It is stressed on the final syllable (because it is a monosyllable) so the consonant t is doubled.Oh, and just to go off-topic and mention other exceptions to double letter rules:
In all the AmE handbooks, rule books, etc., the rule is based on spelling; CVC, stress on the final syllable, double the C.Surely quitting is regular? It is stressed on the final syllable (because it is a monosyllable) so the consonant t is doubled.