I just read the expression "a more senior colleague" in another stackexchange forum. I am not a native speaker but this sounds wrong to me: to my ear "senior" means "older", so "more senior" sounds like "more older" to me.
So which is correct, "a senior colleague" or "a more senior colleague"? Or are both expressions correct?
Best Answer
It is correct. A senior colleague is one that has been with the company longer than you. A more senior colleague is one that has been with the company longer than another that has more seniority than you.
So a junior colleague might ask of you "When was the company founded?" and you, not knowing when, might reply "I don't know. Let's ask a more senior colleague."
"More senior" is to "senior" what "even older" is to "older".