I wonder when the word "teenager" entered our vocabulary. "Teenage" in the
means "tending"; they don't list "teenager," unless I've overlooked
I don't have the supplements to the dictionary, though. Anyway, I thought
"teenage" and "teenager" in our sense of the words originated in the 20th
century, although if the word was in use in the late 19th and first decade
the 20th century, Twain could certainly have used it.