ninefold

American  

[nahyn-fohld, nahyn-fohld] / ˈnaɪnˌfoʊld, ˈnaɪnˈfoʊld /

adjective

1. nine times as great or as much.

2. having nine elements or parts.

---

adverb

1. in a ninefold manner or measure; to or by nine times as much.

   to increase one's income ninefold.

ninefold British  

/ ˈnaɪnˌfəʊld /

adjective

1. equal to or having nine times as many or as much

2. composed of nine parts

---

adverb

1. by or up to nine times as many or as much

Etymology

Origin of ninefold

before 1000; nine + -fold; compare Old English nigonfeald in same sense (not attested in ME)

Example Sentences

Despite political disillusionment, Peruvians' main concern is security, as criminal gangs spread and extortion complaints spiked ninefold in five years.

From Barron's • Jun. 7, 2026

Levels of the therapeutic protein increased nearly ninefold, while indicators of liver damage and inflammation dropped to near-normal levels.

From Science Daily • Apr. 20, 2026

Helped by stock buybacks, IBM’s share price rose by more than ninefold between his arrival in April 1993 and early June 2001; over the same period, the S&P 500 rose less than threefold.

From The Wall Street Journal • Dec. 29, 2025

Growing global demand for the oil- and protein-rich seeds has fueled a ninefold increase in soy production in Brazil since 1985.

From Science Magazine • Nov. 26, 2024

Milton added a ninth whorl,—"that swift nocturnal and diurnal rhomb,"—and then spoke of the "ninefold harmony," as just below.

From Six Centuries of English Poetry Tennyson to Chaucer by Baldwin, James