Etymologically

Etymology and origin of the English word as

as1 to the same degree; in the way that

Confidence
Established
Formation
Inherited
First attested
950 before 950, as Old English ealswā
Inherited from
Old English ealswa via Middle English

Pronunciation

  • /æz/, /əz/[1]

Etymology

The adverb and conjunction is inherited from Middle English as, reduced from als, alse and also,[2][3][4] inherited from Old English ealswā (“all so, wholly so, quite so”), also alswā.[5][6][7][8] The Old English form joins eall (“all”) to swā (“so”) and began as an intensive of the adverb so,[6][5][9] which makes the word in origin the same as also.[6][10] It is related to German als (“as, than”), from Middle High German also,[9][3] and Dictionary.com lists as cognates Middle Dutch alse, Dutch als and Old High German alsō;[4] the Shorter Oxford compares Old Frisian asa.[8]

Earliest recorded meaning

In its full Old English form, of degree: to that extent, in the correlative pattern "as bright as gold", recorded in Ælfric's Catholic Homilies.[6] Old English used the form in all the main senses of so.[6] Barnhart dates ealswā to before 950, and the weakened ase and earlier als and alse to probably before 1200.[5]

Semantic evolution

The word wore down in stress and form through Middle English, by way of alsa, alse and als to the present form.[5][10] The OED finds that the shrinking came first in the relative use, as in the second as of "as good as", and later in the first.[6] The Middle English Dictionary notes that the fuller forms occur as late as 1400, but that the short form predominates after about 1200 and is fully established by about 1400.[2] Since around 1500 the two-syllable also has kept the separate use as a simple demonstrative, so that the modern functions are divided between the two forms.[6] Barnhart observes that in history the word is equivalent to so and has all its relational uses, the differences being largely idiomatic.[5][9] It was once written together with common adjectives and adverbs (asmuch, aswell, assoon), a habit that survives in forasmuch, inasmuch and whereas.[5] Some older constructions have died out: the type with so in the subordinate clause was gone by about 1450,[6] and as opening an emphatic command, as in Chaucer's Miller's Tale, by about 1500.[6] Johnson (1755) gave as his first sense "in the same manner with something else".[11] In 19th-century dialects it served as a relative pronoun ("him as Miss T. is going to marry"), though not in the far north, where at was usual, and after comparatives for "than".[12] Merriam-Webster still labels the relative use with a noun or pronoun antecedent dialectal.[13]

Timeline

  • before 950 – ealswā, all so, wholly so.[5]
  • before 1200 – reduced forms ase, als, alse.[5]
  • c. 1200 – the short form, fully established by about 1400.[9][2]
  • late 14th century – the phrase as it were.[9]
  • late 15th century – the phrase as well, just as much.[9]
  • c. 1500 – the fuller also is confined to the demonstrative use.[6]
  • 1892 – as if, in Kantian metaphysics, translating German als ob.[9]
  • 1995 – as if!, an interjection of disbelief.[9]

Meanings

Adverb

  1. To the same degree or amount; equally: The tenor held the note as steadily as a bell.[13][14]
  2. For instance: large cats, as the lion or leopard.[13][14]

Conjunction

  1. To the same degree that, used after as or so: The river is as deep as it is wide.[13][14]
  2. In the way that: He cooks as only his mother can.[15][6]
  3. While; at the moment when: The phone rang as she was locking the door.[15][4]
  4. Because; since: As it was raining, we stayed at home.[4]

Preposition

  1. In the role or capacity of: She served as treasurer for ten years.[13]
  2. Like; in the manner of: His voice was as a distant drum.[13]

Pronoun

  1. That, who or which, after same or such: They kept the same customs as their parents did.[13]
  2. (dialect) That, who or which, after a noun or pronoun: the man as sold me the horse.[13][12]

Word family

as2 Roman coin

Confidence
Established
Formation
Borrowing
First attested
1541 T. Elyot, The Image of Gouernance
Borrowed from
Latin as
Etymology tree of as2
inherited borrowed derived
Latin ās
English as

Pronunciation

Etymology

The word for the coin is borrowed from Latin ās (“a unit, one, a whole; a small coin”), genitive assis.[6][3][9][13][8] Its further origin is unclear: Collins calls it probably Etruscan,[15] and Etymonline suggests that it was perhaps Etruscan and related to the Greek word for one, or else taken directly from Greek;[9] Klein instead takes it as meaning a square piece of metal, identical with assis, axis (“plank, disc”) and related to asser (“pole, stake”).[3] The Latin word is also the source of ace, through as.[9][3][2]

Earliest recorded meaning

An ancient Roman copper coin: 1541, in T. Elyot's The Image of Gouernance.[6] Merriam-Webster gives 1540 as the first date of its Roman weight sense,[13] the Shorter Oxford the mid 16th century,[8] and Collins the 17th century.[15]

Semantic evolution

The Shorter Oxford labels the word as belonging to Roman antiquities.[8] The coin itself lost weight over time: the OED has it starting at twelve ounces and reduced in stages to half an ounce,[6][8] and Etymonline adds that it began as a rectangular bronze plaque weighing a pound and became a round coin under the emperors.[9]

Timeline

  • 1541 – an ancient Roman coin.[6]

Meanings

Noun

  1. A bronze or copper coin of ancient Rome, whose weight fell from twelve ounces to half an ounce; plural asses.[13][6][8]
  2. A similar coin issued by some Roman emperors.[13]
  3. A unit of value equal to such a coin.[13]
  4. The Roman pound, a unit of weight.[13]

Usage notes

Used as a conjunction, the word can mean both "because" and "while", so a sentence such as As the doors were locked, she turned back can be ambiguous.[4] The pattern as … as is standard in positive and negative sentences, while so … as is sometimes used in negative sentences and questions.[4] Merriam-Webster also enters a separate as, a Persian card game also called as nas, recorded from 1876.[13]

References

  1. ^ a b Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d Kurath, Hans; Kuhn, Sherman M.; Lewis, Robert E., eds. (1952–2001), Middle English Dictionary, Ann Arbor: University of Michigan Press; online edition ed. Frances McSparran et al. (2000–2018)
  3. ^ a b c d e Klein, Ernest. A Comprehensive Etymological Dictionary of the English Language. 2 vols. Amsterdam: Elsevier, 1966–1967.
  4. ^ a b c d e f Dictionary.com Unabridged (2016), based on the Random House Unabridged Dictionary, New York: Random House
  5. ^ a b c d e f g h Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
  6. ^ a b c d e f g h i j k l m n o p Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
  7. ^ Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
  8. ^ 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
  9. ^ a b c d e f g h i j k l Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  10. ^ a b Ayto, John (2005), Word Origins: The Secret Histories of English Words from A to Z, 2nd ed., London: A & C Black
  11. ^ Johnson, Samuel (1755), A Dictionary of the English Language, London; 4th ed. 1773; Johnson's Dictionary Online, ed. Beth Rapp Young et al.
  12. ^ a b Wright, Joseph, ed. (1898–1905), The English Dialect Dictionary, 6 vols., Oxford: Henry Frowde; via EDD Online 4.0, University of Innsbruck (CC BY 4.0)
  13. ^ a b c d e f g h i j k l m n o Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  14. ^ a b c The American Heritage Dictionary of the English Language (online 2024), 5th ed., Boston: Houghton Mifflin Harcourt
  15. ^ a b c d Collins English Dictionary (2023), Glasgow: HarperCollins

Related etymologies

  • lewd · also from Old English
  • shrub · also from Old English
  • clot · also from Old English
  • frosty · also from Old English
  • amaze · also from Old English
  • fielder · also from Old English
  • deepen · also from Old English
  • stead · also from Old English
Cite this entry

“As.” Etymologically, 4 Nov. 2026, etymologically.com/en/as. Accessed 5 Nov. 2026.

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