I saw a spelling mistake on an SO question: submittion. That got me wondering, is there a name for the shift of ‑mit‑ to ‑miss‑ in submission, permission, admission and so on? Are there other patterns ...
Where does the adjective form extensible come from and does it connote anything different than extendible? What's the difference, if any, between the two?
Is there any rhyme or reason to when one should double the last consonant when adding -ed or -ing? [duplicate]
Possible Duplicate: focussed or focused? The double consonant Sometimes, final consonants are doubled when adding -ed or -ing to the end of a verb whose penultimate letter is a vowel. ...