inroad

Etymology

It is formed from English in + road,^{[2][3][4][5][6]} with the second element in its old sense of "riding", which it has since lost.^[2][4][5][7] That sense goes back to Old English rād (“riding expedition, journey, hostile incursion”), and ultimately to Proto-Indo-European *reidh- (“to ride”).^[5] The same Old English word, through a Scottish and northern English form, gave raid.^[5][7]

Earliest recorded meaning

A hostile incursion into a country; a raid or foray: first recorded in 1548, in W. Patten's Expedicion into Scotlande.^[2][8] Etymonline dates it to the 1540s,^[5] and Dictionary.com to 1540–50.^[9]

Semantic evolution

The word began as a term for mounted raiding, at a time when road still meant a riding; the sense of an open way for travelling appears only in the 1590s.^[5] Weekley notes that inroad preserves the older meaning.^[7] Johnson (1755) still defined it as a military matter, an incursion or sudden invasion, quoting Shakespeare, Bacon, Milton and Clarendon, along with Dryden's figurative line about the inroads made by poets.^[10] From the attack on a country it spread to any forcible encroachment, recorded from 1637,^[2] and in this sense it is now usually plural.^[3] A rare sense, an opening or passage into something, lasted only from 1650 to 1697.^[2] The verb, to invade, is recorded from 1625 to 1658;^[2][3] an intransitive use, to make inroads, appears in 1878 and is rare.^[2][3]

Timeline

• 1548 – noun, a hostile incursion, a raid.^[2][8]
• 1625 – verb, to invade (obsolete by 1658).^[2]
• 1637 – figurative, a forcible encroachment.^[2]
• 1650 – an opening or passage (rare; last recorded 1697).^[2]
• 1878 – intransitive verb, to make inroads.^[2]

Meanings

Noun

1. A sudden hostile incursion; a raid or foray.^[11][8][2]
2. An advance that takes something away from another; a serious encroachment, usually in the plural: Streaming services have made deep inroads into cinema audiences.^[11][8][3]

Verb

1. To make inroads (rare).^[2][3][8]
2. To invade or make an inroad into (obsolete, 1625–1658).^[2][3]

Related words

• road
• raid
• ride
• in

References

1. ^ a b Wiktionary, the free dictionary, https://en.wiktionary.org
2. ^ a b c d e f g h i j k l m n o Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
3. ^ a b c d e f g Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
4. ^ a b Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
5. ^ a b c d e f Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
6. ^ The American Heritage Dictionary of the English Language (online 2024), 5th ed., Boston: Houghton Mifflin Harcourt
7. ^ a b c Weekley, Ernest (1921), An Etymological Dictionary of Modern English, London: John Murray
8. ^ a b c d e Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
9. ^ Dictionary.com Unabridged (2016), based on the Random House Unabridged Dictionary, New York: Random House
10. ^ Johnson, Samuel (1755), A Dictionary of the English Language, London; 4th ed. 1773; Johnson's Dictionary Online, ed. Beth Rapp Young et al.
11. ^ a b Collins English Dictionary (2023), Glasgow: HarperCollins