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 (bĭ-kôz′, -kŭz′)
For the reason that; since.

[Middle English, short for bi cause of; see because of.]
Usage Note: A traditional rule holds that the construction the reason is because is redundant, and should be avoided in favor of the reason is that. The usage is well established, however, and can be justified by analogy to constructions such as His purpose in calling her was so that she would be forewarned of the change in schedule or The last time I saw her was when she was leaving for college. All three constructions are somewhat less than graceful, however. · A favorite rule of schoolteachers (but curiously absent from the tradition of usage commentary) is that a sentence must not begin with because. Sometimes, however, because is perfectly appropriate as the opening word of a sentence. In fact, sentences beginning with because are quite common in written English, as in this example from Frank Conroy: "Because he was a prodigy, he was somewhat isolated within his own generation." · Another rule states that one should not use a clause beginning with because as the subject of a sentence, as in Just because he thinks it a good idea doesn't mean it's a good idea. This construction is perfectly acceptable, but it carries a colloquial flavor and may best be reserved for informal situations. See Usage Note at as1.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(bɪˈkɒz; -ˈkəz)
1. (subordinating) on account of the fact that; on account of being; since: because it's so cold we'll go home.
2. because of (preposition) on account of: I lost my job because of her.
[C14 bi cause, from bi by + cause]
Usage: See at reason
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(bɪˈkɔz, -ˈkɒz, -ˈkʌz)

for the reason that; due to the fact that.
because of, by reason of; due to.
[1275–1325; Middle English bi cause literally, by cause]
usage: See reason.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.


1. 'because'

You use because when you are giving the reason for something.

If someone asks a question beginning with 'Why?', you can reply using because.

'Why can't you come?' – 'Because I'm too busy.'

You use because with a reason clause when you are explaining a statement.

I couldn't see Elena's expression, because her head was turned.
Because it's an area of outstanding natural beauty, you can't build on it.

Be Careful!
When you use because at the beginning of a sentence, don't put a phrase such as 'that is why' at the beginning of the second clause. Don't say, for example, 'Because you have been very ill, that is why you will understand how I feel'. You simply say 'Because you have been very ill, you will understand how I feel'.

2. 'because of'

You can use because of before a noun phrase when you are giving the reason for something.

Many couples break up because of a lack of money.
Because of the heat, the front door was open.
Collins COBUILD English Usage © HarperCollins Publishers 1992, 2004, 2011, 2012
ThesaurusAntonymsRelated WordsSynonymsLegend:


conjunction since, as, in that, seeing as, BK (S.M.S.) They could not obey the command because they had no ammunition.
because of as a result of, on account of, by reason of, thanks to, owing to He failed because of a lack of money
Usage: The phrase on account of can provide a useful alternative to because of in writing. It occurs relatively infrequently in spoken language, where it is sometimes followed by a clause, as in on account of I don't do drugs. However, this use is considered nonstandard.
Collins Thesaurus of the English Language – Complete and Unabridged 2nd Edition. 2002 © HarperCollins Publishers 1995, 2002
بِسَبَب، لأِنلأَنَّ
vegna òess aî, sökum
tā kātāpēc ka
fordidet kommer avettersom
porquejá que
eftersomdärför att


A. CONJporque
I came because you asked me tovine porque me lo pediste
because he was ill he couldn't gono pudo ir por estar enfermo
just because he has two cars he thinks he's somebodysólo porque tiene dos coches se cree todo un personaje
B. because of PREPpor
I did it because of youlo hice por ti
many families break up because of a lack of moneymuchas familias se deshacen por or debido a la falta de dinero
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005


[bɪˈkəz bɪˈkɒz]
conjparce que
I did it because → Je l'ai fait parce que ...
because of prepà cause de, en raison de
because of the weather → à cause du temps
all because of
It's all because of him! → Tout est de sa faute!
Collins English/French Electronic Resource. © HarperCollins Publishers 2005


conjweil; (= since also)da; it was the more surprising because we were not expecting ites war umso überraschender, als wir es nicht erwartet hatten; if I did it, it was because it had to be doneich habe es nur getan, weil es getan werden musste; why did you do it? — just because (inf)warum or weshalb hast du das getan? — darum or deshalb
prep because ofwegen (+gen or (inf) +dat); I only did it because of youich habe es nur deinetwegen/Ihretwegen getan
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007


[bɪˈkɒz] conj (gen) → perché
all the more surprising because → ancora più sorprendente dal momento che or poiché
because of → a causa di
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995


(biˈkoz) conjunction
for the reason that. I can't go because I am ill.
because of
on account of. I can't walk because of my broken leg.
Kernerman English Multilingual Dictionary © 2006-2013 K Dictionaries Ltd.


لأَنَّ protože fordi denn επειδή porque koska parce que jer perché ・・・だから ...때문에 omdat fordi ponieważ porque потому что eftersom เพราะว่า çünkü 因为
Multilingual Translator © HarperCollins Publishers 2009