parent 有冇單數詞?

parent 無加"s " 是指父或母
my parents 是指父母,即雙親
如想指父親或母親任何一方,可用my parent
所以這個字是可以用單數,即my parent

Silly question, why not calling MUM or DAD for one of them. MY DEAR!
It's your family. If you insist not to call mum or dad, using the word " guardian " would be better.