as

adv

1. (not-comparable)To such an extent or degree; to the same extent or degree.

   “She regards her kids as (being) as holy as saints.”

   “You’re not as tall as I am, but you are definitely as happy as can be.”

   “It's not as well made, but it's twice as expensive.”

   “In 1939, as in 1914, all of Europe seemed to want war.”

   ““My Continental prominence is improving,” I commented dryly. Von Lindowe cut at a furze bush with his silver-mounted rattan. “Quite so,” he said as dryly, his hand at his mustache. “I may say if your intentions were known your life would not be worth a curse.””

2. (not-comparable)Considered to be, in relation to something else; in the relation (specified).
3. (dated, formal, not-comparable)For example; for instance. (Compare such as.)

   “Likewise many other indulgences were by virtue hereof granted; as, to have a portatile altar, to receive the Sacrament privately; […]”

   “First; original; indigenous; primitive; native; as, the aboriginal tribes of America.”

   “The floor of the chamber was tesselated, of marble and green tourmaline, and on every square of tourmaline was carven the image of a fish: as the dolphin, the conger, the cat-fish, the salmon, the tunny, the squid, and other wonders of the deep.”

4. (Australia, New-Zealand, especially, slang)Used to intensify an adjective; very much; extremely

   “sweet as”

   “It also appears in other positions in the sentence: his big as car could hardly fit. It's pretty scratched, and dented as.”

conj

1. In the (same) way or manner that; to the (same) degree that.

   “Do as I say!”

   “I'm under a lot of pressure, as you know.”

   “As you wish, my lord!”

   “Mom was slim, as were most of her relatives.”

   “The kidnappers released him as (was) agreed.”

2. In the (same) way or manner that; to the (same) degree that.

   “She's twice as strong as I was two years ago.”

   “It's not so complicated as I expected.”

   “It’s as easy to do it right as it is to do it wrong.”

3. In the (same) way or manner that; to the (same) degree that.

   “[...] that the Board of Regents had fallen into disrepute; that intelligent men inquired what the board was; he said that it was a quiet body, and kept out of the newspapers — and so quiet as to lead many to suppose tho board had ceased to exist.”

   “It was a talent he had developed; he could actually be so quiet as to be practically invisible. In class, he was rarely called upon to answer any questions. In the crowded hallways, he could slip in and out without offending any of the local bullies ...”

   “Under most circumstances, it will be possible to draw a distinction sufficiently clear as to allow an unambiguous allocation to one or other category.”

4. In the (same) way or manner that; to the (same) degree that.

   “(As) much as I respect your viewpoint, I can’t agree.”

   “(As) bravely as they fought, they soon lost the battle.”

   “Try as she might, she could not escape.”

   “1843 (first published), Thomas Babington Macaulay, Essays We wish, however, to avail ourselves of the interest, transient as it may be, which this work has excited.”

   “If this happens, be patient and, difficult as it may be, try not to take these reactions personally.”

5. At the time that; during the time when:

   “As I came in, she fled.”

6. At the time that; during the time when:

   “He sleeps as the rain falls.”

7. At the time that; during the time when:

   “As my fear grew, so did my legs become heavy.”

   “As she grew older, she grew wiser.”

8. Being that, considering that, because, since.

   “As it’s too late, I quit.”

   “(As) tired as he was, I decided not to disturb him.”

9. (dated)Introducing a comparison with a hypothetical state (+ subjunctive, or with the verb elided): as though, as if.

   “And sodenly there cam a sounde from heven as it had bene the commynge off a myghty wynde […]”

   “Oft haue I ſeene the haughty Cardinall, More like a Souldier then a man o' th' Church, As ſtout and proud as he were Lord of all […]”

   “And then he flue on hir as he were wood, / And on hir breeche did hack and foyne a-good.”

   “I start as from some dreadful dream.”

   “I feel securely fixed on the careering chair, and with the momentum gained I steer myself as on skis to the guard and come to a stop with a happy little flourish.”

10. used before a preposition to clarify that the prepositional phrase restricts the meaning of the sentence; specifically.

    “The case is dismissed as between Jones and Smith.”

    “The case is dismissed as against Smith.”

11. Functioning as a relative conjunction, and sometimes like a relative pronoun: that, which, who. (See usage notes.)

    “You strike me as being a very fidgety type of person.”

    “He had the same problem as she did getting the lock open.”

    “I read this extract as being extremely pessimistic.”

    “Now will he sit under a medlar tree, And wish his mistress were that kind of fruit, As maids call medlars, when they laugh alone.”

    “the temper is to be altered and amended, with such things as fortify and strengthen the heart and brain […]”

12. (England, obsolete, possibly, rare)Than.

    “The king was not more forward to bestow favours on them as they free to deal affronts to others their superiors.”

    “Darkness itself is no more opposite to light as their actions were diametricall to their words.”

prep

1. Introducing a basis of comparison, with an object in the objective case.

   “You are not as tall as my sister.”

   “They are big as houses.”

   “A great bargain also had been the excellent Axminster carpet which covered the floor; as, again, the arm-chair in which Bunting now sat forward, staring into the dull, small fire.”

   “She was like a Beardsley Salome, he had said. And indeed she had the narrow eyes and the high cheekbone of that creature, and as nearly the sinuosity as is compatible with human symmetry.”

2. In the role of.

   “What is your opinion as a parent?”

   “As your big sis, I worry about your life too.”

   “He was never seen as the boss, but rather as a friend.”

   “Directed by Howard Hawks, Gentlemen Prefer Blondes starred Marilyn Monroe as Lorelei and Jane Russell as Dorothy.”

   “Not long ago, it was difficult to produce photographs of tiny creatures with every part in focus.[…]A photo processing technique called focus stacking has changed that. Developed as a tool to electronically combine the sharpest bits of multiple digital images, focus stacking is a boon to biologists seeking full focus on a micron scale.”

3. In the form of.

   “I bought you a new toy as a special treat.”

noun

1. A libra, a Roman pound.
2. (Ancient-Rome)Any of several coins of Rome, coined in bronze or later copper; or the equivalent value.
3. (alt-of, alternative, rare)Alternative form of a's.
4. (UK, abbreviation, alt-of, historical, initialism)Initialism of Advanced Supplementary.
5. (UK, abbreviation, alt-of, initialism)Initialism of Advanced Subsidiary.

   “AS-level”

6. (abbreviation, alt-of, initialism)Initialism of aortic stenosis.
7. (abbreviation, alt-of, initialism)Initialism of Asperger's syndrome.
8. (abbreviation, alt-of, initialism)Initialism of ankylosing spondylitis.
9. (Internet, abbreviation, alt-of, initialism)Initialism of autonomous system.
10. (Navy, US, abbreviation, alt-of, initialism)Initialism of auxiliary submarine: a naval tender, a submarine tender that tends to submarines.
11. (abbreviation, alt-of, initialism)Initialism of application server.
12. (abbreviation, alt-of, initialism)Initialism of Alström syndrome.
13. (form-of, plural)plural of A

    “She went from getting Cs and Ds to earning straight As.”

name

1. (abbreviation, alt-of, initialism)Initialism of Anglo-Saxon.
2. (abbreviation, alt-of)Abbreviation of Assam: a state of India.

phrase

1. (abbreviation, alt-of, initialism)Initialism of alayhi as-salaam.