There are 2 distinct ways of pronouncing “cc” in English words. Usually this occurs in the middle of words.
1. CC = /k/ (single /k/ sound)
Here, CC is pronounced as a single /k/ sound.
Letter groups that end with “a“, “o” and “u” are pronounced this way.
Letter groups that end with a consonant are pronounced this way as well
2. CC = /kˈs/ (/k/ followed by /s/)
Here, the CC is split into two sounds: the first C is pronounced as a /k/, and the second C is pronounced as an /s/.
Letter groups that end with “e” and “i” are pronounced this way.
The letter group ending with “y” is also pronounced this way, although this is rare.
Exceptions to this rule are certain words of Italian origin. “CC” are pronounced as /tʃi/ here.
Although you can say “gnocchi” (/ˈnjɒk.i/) with a single k consonant sound.
Original posts: 2 October 2018