What does incommensurably mean?
Incommensurably is a formal adverb meaning to an extent that cannot be measured or compared with something else on a common scale. In ordinary literary and argumentative use, it usually modifies a comparative term such as greater, larger, better, or more important: when something is incommensurably more valuable, the difference is meant to be so substantial that ordinary proportional comparison becomes inadequate. The word can also suggest values or perspectives so different that they cannot be placed on the same scale, as in “incommensurably different.” In mathematics, it refers to quantities that lack a common measure or a rational ratio, the sense behind terms such as commensurable and incommensurable. Although its everyday force is emphatic rather than numerical, it should not be treated as a precise mathematical claim unless context makes one intended. Incommensurably is most natural in scholarly, philosophical, literary, and formal explanatory prose. It is less common in conversation, where vastly, far, or much more would normally be preferred. Its value lies in combining precision of origin with rhetorical force, distinguishing a profound disparity from a merely large difference.
adverbTo an extent that cannot be compared with another quantity on a common scale; disproportionately or beyond ordinary comparison.
- Disproportionately, to an extent too great or different for a meaningful comparison.
- In mathematics, in a way that prevents quantities from being compared by a common measure or rational ratio.
"The research opportunities available at the university are incommensurably greater than those open to most independent scholars."
"The library's resources are incommensurably greater than those of the village school."
"The two proposals rest on incommensurably different assumptions."
The diagonal of a square and its side are incommensurable: their ratio, √2, is irrational.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does incommensurably come from?
The word comes ultimately from Latin incommensurabilis, meaning “not measurable by the same standard,” formed from in- (“not”) and commensurabilis, a term derived from mensura (“measure”). The English adverb was formed by adding -ly to the adjective incommensurable. Early usage of this word family was mathematical, while its modern figurative use extends the idea of quantities or values that cannot be compared on a common scale.
How incommensurably is actually used
This is a formal and scholarly word, common in mathematical, philosophical, literary, and argumentative prose. In general usage, it often conveys rhetorical force rather than a precise numerical relationship, so less emphatic alternatives such as vastly or far more are preferred in ordinary conversation.
Easily confused with incommensurably
Incomparable is normally an adjective meaning too great or different to compare, whereas incommensurably is an adverb describing the degree of such a disparity.