7
votes
2answers
275 views

Are there names for consonant-shifts when suffixes are added?

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 ...
8
votes
4answers
6k views

“Extensible” vs. “extendible”

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?
4
votes
2answers
723 views

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. ...