7
votes
2answers
301 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 ...
14
votes
3answers
12k views

Why is the plural form of “life” “lives”, while the plural form of “still life” is “still lifes”?

Why does the plural form of "life" is "lives", while the plural form of "still life" is "still lifes"? From Wikipedia: A still life (plural still lifes) is a work of art depicting mostly ...