fifty-odd

the term "fifty-odd" is a modern english compound where "odd" functions not in its primary sense of 'strange', but in its secondary, numerical sense of 'left over, extra, and not exact'. this usage of "odd" to mean 'approximately' or 'a little more than' dates back to the late 18th century, often attached to round numbers. the logic is straightforward: "fifty" provides the base number, and "odd" adds the notion of an unspecified surplus, conveying an approximate quantity slightly exceeding the stated figure. it is a fixed collocation where the combined meaning is idiomatic and distinct from the sum of its parts.

this is a compound adjective formed from the numeral "fifty" and the adjective "odd". "fifty" originates from old english "fīftig", from "fīf" (five) + the suffix "-tig" (group of ten). "odd" comes from old norse "oddi", meaning a point, triangle, or odd number (the third and unmatched one).