What does thirtyfold mean?
Thirtyfold means thirty times as great, as much, or as many, and functions chiefly as an adjective and adverb. It is most often used when describing a change in quantity, especially an increase, reduction, expansion, or improvement: a “thirtyfold increase” means that the new value is thirty times the old one. Because the term states a multiplier, it is more precise than saying that something is “thirty times more,” a phrase that can be misread because of the mathematical ambiguity of “more.” The word has a formal, analytical tone and appears in business, science, technology, and statistical writing, although its meaning is readily accessible outside those fields. It is usually written as one word, with no hyphen. In everyday conversation, “thirty times as much” may sound more natural, particularly when precision matters less. Knowing thirtyfold therefore provides both a compact label for an extraordinary proportional change and a way to distinguish a factor of thirty from a percentage increase.
Having or amounting to thirty times the quantity in question.
"The new system delivered a thirtyfold increase in processing speed."
Common before nouns describing a proportional change, such as “a thirtyfold increase” or “a thirtyfold rise.”
By a factor of thirty; to thirty times the original amount or level.
"Sales increased thirtyfold within a year."
Especially common in technical, financial, and statistical descriptions of proportional growth or change.
Thirtyfold compresses a dramatic multiplier into one compound: thirty times the original amount, not merely a thirty-percent gain.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does thirtyfold come from?
English thirtyfold is a transparent compound formed from thirty and the multiplicative suffix -fold, the same formation seen in twofold, tenfold, and hundredfold. The compound is attested from Middle English and has continued in both adjectival and adverbial use. Its history is morphological rather than obscure: its meaning follows directly from its parts, while related number compounds preserve the same English pattern.
How thirtyfold is actually used
The word has a formal, analytical tone and is especially common in business, science, technology, and statistics. It denotes an exact multiplicative relationship, so it should not be confused with a 30-percent increase or with the potentially ambiguous phrase “thirty times more.”