also
[adverb]
Synonyms: too, additionally, and, as well, besides, further, furthermore, in addition, into the bargain, moreover, to boot

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Related Idioms: in like manner, into the bargain, on top of that, to boot

[TahlilGaran] English Synonym Dictionary ▲

al‧so S1 W1 /ˈɔːlsəʊ $ ˈɒːlsoʊ/ adverb
[Language: Old English; Origin: eallswa, from eall 'completely' + swa 'so']

1. in addition to something else that you have mentioned ⇒ as well, too:
Information is also available on women’s health care.
She sings beautifully and also plays the flute and piano.
The system was not only complicated but also ineffective.

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In written English, avoid starting a sentence with also. Use furthermore or moreover instead, or put also before the main verb:
■ Also, it costs more. ➔ Furthermore, it costs more. | It also costs more.

2. used to say that the same thing is true about another person or thing:
My girlfriend was also called Helen.

[TahlilGaran] Dictionary of Contemporary English ▲

also
adverb
1.
BAD: We also would like to be given more fresh food.
GOOD: We would also like to be given more fresh food.
BAD: The school has also a gymnasium.
GOOD: The school also has a gymnasium.
BAD: Besides the nature society, there also is a music society.
GOOD: Besides the nature society, there is also a music society.

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2.
BAD: I don't like your climate and I don't like English food also.
GOOD: I don't like your climate and I don't like English food either.
BAD: He doesn't also recommend winter holidays.
GOOD: He doesn't recommend winter holidays either.

Usage Note:
See note at TOO 5 (too)

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3.
DUBIOUS: Women are often better at negotiating than men. Also, they don't give up so easily.
GOOD: Women are often better at negotiating than men. What's more, they don't give up so easily.
DUBIOUS: A footbridge would take too long to build. Also, it would be of no use to the disabled.
GOOD: A footbridge would take too long to build. Furthermore, it would be of no use to the disabled.

Usage Note:
When you want to add another reason and give it special emphasis or importance, use furthermore, moreover, what's more or besides : 'The drug has powerful side effects. Moreover, it can be addictive.' Also is not wrong but does not have the same persuasive force.

[TahlilGaran] Dictionary of Common Errors ▲