Meanings
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1
adv
in the same way; with the same statement applying to what follows
The front room needs repainting, and ditto the hall.
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2
intj
used informally to say that one agrees or has the same feeling or experience
Lena said ditto when I admitted that I was exhausted.
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3
noun
a mark indicating that a word or figure above should be repeated
The clerk used a ditto to repeat the address in the next row.
Thesaurus
Etymology
From regional Italian ditto, a variant of detto, 'said,' the past participle of dire, from Latin dicere, 'to say.' English merchants adopted it in account books to mean 'the aforesaid' and avoid repeating an entry. The agreement interjection and broader 'same' uses developed from that shorthand.