In the word conveyed why is final y not changed to I before adding suffix?

You're right to notice that the final "y" in "convey" doesn't change to "i" when adding a suffix. Here's why:

* The rule: The general rule is that a final "y" changes to "i" before a suffix *if* the letter before the "y" is a consonant. This helps maintain a consistent pronunciation.

* The exception: In "convey," the letter before the "y" is a vowel ("e"). When this happens, the "y" remains unchanged.

Examples:

* Changing "y" to "i":

* "happy" + "-ness" = "happiness"

* "try" + "-ing" = "trying"

* Keeping the "y":

* "convey" + "-ance" = "conveyance"

* "day" + "-light" = "daylight"

In short, the final "y" in "convey" stays the same because the preceding letter is a vowel, not a consonant.