Goidelic languages
In Goidelic languages, "ch" represents the voiceless velar fricative . In Irish, "ch" stands for when broad and (or between vowels) when slender. Examples: broad in "chara" "friend" (lenited), "loch" "lake, loch", "boichte" "poorer"; slender in "Chéadaoin" "Wednesday" (lenited), "deich" "ten".