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Question 1 of 7
Which sentence is correct?

Idioms about as

Origin of as

First recorded before 1000; Middle English as, als, alse, also, Old English alswā, ealswā “all so, quite so, quite as, as”; cognate with Middle Dutch alse (Dutch als ), Old High German alsō (Middle High German álsō, álse, als, German also “so,” als “as, as if, because”); cf. also

usage note for as

As a conjunction, one sense of as is “because”: As she was bored, Sue left the room. As also has an equally common use in the sense “while, when”: As the parade passed by, the crowd cheered and applauded. These two senses sometimes result in ambiguity: As the gates were closed, he walked away. (When? Because?)
Asas is standard in both positive and negative constructions: The fleet was as widely scattered then as it had been at the start of the conflict. Foreign service is not as attractive as it once was. Soas is sometimes used in negative constructions (… not so attractive as it once was ) and in questions ( “What is so rare as a day in June?” ).
The phrase as far as generally introduces a clause: As far as money is concerned, the council has exhausted all its resources. In some informal speech and writing, as far as is treated as a preposition and followed only by an object: As far as money, the council has exhausted all its resources.
As to as a compound preposition has long been standard though occasionally criticized as a vague substitute for about, of, on, or concerning: We were undecided as to our destination. As to sometimes occurs at the beginning of a sentence, where it introduces an element that would otherwise have less emphasis: As to his salary, that too will be reviewed. As to what and as to whether are sometimes considered redundant but have long been standard: an argument as to what department was responsible. See also all, farther, like1, so1.

Other definitions for as (2 of 8)

[ as ]
/ æs /

noun, plural as·ses [as-iz]. /ˈæs ɪz/.
a copper coin and early monetary unit of ancient Rome, originally having a nominal weight of a pound of 12 ounces: discontinued c80 b.c.
a unit of weight equal to 12 ounces.

Origin of as

First recorded 1540–50; from Latin as (also assis ); further origin unknown

Other definitions for as (3 of 8)


Symbol, Chemistry.

Other definitions for as (4 of 8)


American Samoa (approved especially for use with zip code).

Other definitions for as (5 of 8)


variant of ad- before s: assert.

Other definitions for as (6 of 8)



Other definitions for as (7 of 8)



Other definitions for as (8 of 8)


Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use as in a sentence

British Dictionary definitions for as (1 of 5)

/ (æz, unstressed əz) /

conjunction (subordinating)
adverb, conjunction
  1. used correlatively before an adjective or adverb and before a noun phrase or a clause to indicate identity of extent, amount, etcshe is as heavy as her sister; she is as heavy now as she used to be
  2. used with this sense after a noun phrase introduced by the sameshe is the same height as her sister

Word Origin for as

Old English alswā likewise; see also

undefined as

British Dictionary definitions for as (2 of 5)

/ (æs) /

an ancient Roman unit of weight approximately equal to 1 pound troy (373 grams)
the standard monetary unit and copper coin of ancient Rome

Word Origin for as

C17: from Latin ās unity, probably of Etruscan origin

British Dictionary definitions for as (3 of 5)


the internet domain name for
American Samoa

British Dictionary definitions for as (4 of 5)


symbol for
chem arsenic

British Dictionary definitions for as (5 of 5)


abbreviation for
Also: A.S. Anglo-Saxon
Australian Standards
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for as


The symbol for arsenic.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.