late-nineteenth

The compound adjective "late-nineteenth" is a modern English construction following a clear Germanic pattern of combining a temporal qualifier with a numbered century. The element "late" derives from the Proto-Germanic lataz, meaning "slow" or "slack," which evolved in English to denote the latter part of a duration. "Nineteenth" is built on the cardinal number "nineteen," which originates from the Proto-Germanic newuntehun, a compound of newun (nine) and tehun (ten). The logic of the compound is transparently chronological, using "late" to pinpoint the concluding decades within the broader span of the 1800s, a period often associated with industrialization, imperialism, and profound social change.

Structure: late (temporal) + nineteenth (ordinal) - late: From Old English læt (slow, tardy, occurring after the proper time). In this compound, it functions as a temporal adjective meaning "toward the end of a period." - nineteenth: From Old English nigontēoþa (ordinal form of nineteen), itself from nigon (nine) + tēoþa (tenth). It functions as an ordinal number specifying the century.