A serenade on my Apple Music in the dark night of 10/13, Danny Kaye singing Gilbert & Sullivan patter songs, with warmth rather than the sharp edges of the D’Oyly Carte patter specialists; at my 2 am whizz break, he had arrived at the Lord Chancellor’s “Nightmare Song”, from G&S’s Iolanthe, with its concluding:
the night has been long —
ditto ditto my song —
and thank goodness
they’re both of them over!
Being (more or less relentlessly) a linguist, I asked myself, not for the first time: What kind of word is ditto? It looks a lot like some kind of adverb here, with the crucial line paraphrasable as (awkward) thus thus my song, or (better) also also my song, or (even better) so too my song. (Although you might argue that ditto‘s a special kind of noun, since it’s paraphrasable as the same.) And, while we’re on the subject: Where on earth does it come from? I entertained speculations about some connection to double, maybe Greek di– ‘two’, or possibly to dot, given ditto marks.
My etymological speculations are provably off-base; the closest English words are diction and dictate, from the Latin stem dict– ‘say’. Meanwhile, my off-the-cuff part-of-speech assignment is flatly contradicted by the authority I look at first, NOAD (a lexicographically respectable dictionary of manageable size, and — unlike AHD or the M-W dictionaries — one accessible directly from my browser). NOAD is based on the resources of the OED, and the OED (which I can access on-line) on ditto classifies the word as a noun — but in an entry from well over a century ago, so we need to look critically at its evidence for this classification. Which shows that in the 18th century the word was incontestably a noun (with a plural dittoes). That usage, however, is long dead. The question is what to say about modern usage, and there my adverb idea has a lot going for it (and is also the classification given in Merriam-Webster’s word history for modern ditto).
So we’re in for a bumpy ride, much like the Lord Chancellor’s, with possibly more questions than answers. Hang on.
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