1. In addition; besides.
2. Likewise; too: If you will stay, I will also.
And in addition: It's a pretty cat, also friendly.
Usage Note: Some people maintain that it is wrong to begin a sentence with also. In our 2014 survey, however, 70 percent of the Usage Panel found the usage acceptable in this example: The warranty covers all power train components. Also, participating dealers back their work with a free lifetime service guarantee. Given this high rate of acceptance, as well as the fact that it is perfectly normal to start sentences with other conjunctive adverbs such as furthermore, there seems no reason to condemn this usage of also.
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.
(sentence modifier) in addition; as well; too
[Old English alswā; related to Old High German alsō, Old Frisian alsa; see all, so1]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
al•so (ˈɔl soʊ)
1. in addition; too; besides: He was thin, and he was also tall.
2. likewise; in the same manner: Since you're having another cup of coffee, I'll have one also.
[1125–75; Middle English; Old English (e)alswā all
(wholly or quite) so1
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
also too as well
You use also, too, or as well when you are giving more information about something.
Also is usually used in front of a verb. If there is no auxiliary verb, you put also immediately in front of the verb, unless the verb is be.
I also began to be interested in cricket.
They also helped out.
If the verb is be, you put also after it.
I was also an American.
If there is an auxiliary verb, you put also after the auxiliary verb.
The symptoms of the illness were also described in the book.
If there is more than one auxiliary verb, you put also after the first one.
We'll also be learning about healthy eating.
Also is sometimes put at the beginning of a clause.
She is very intelligent. Also, she is gorgeous.
Don't put also at the end of a clause.
You usually put too at the end of a clause.
Now the problem affects middle-class children, too.
I'll miss you, and Steve will, too.
In conversation, too is used after a word or phrase when you are making a brief comment on something that has just been said.
'His father kicked him out of the house.' 'Quite right, too.'
'They've finished mending the road.' 'About time, too!'
Too is sometimes put after the first noun phrase in a clause.
I wondered whether I too would become ill.
, Melissa, too, felt miserable.
However, the position of too can make a difference to the meaning of a sentence. 'I am an American too' can mean either 'Like the person just mentioned, I am an American' or 'Besides having the other qualities just mentioned, I am an American'. However, 'I too am an American' can only mean 'Like the person just mentioned, I am an American'.
Don't put too at the beginning of a sentence.
For more information, see too
3. 'as well'
As well always goes at the end of a clause.
Filter coffee is better for your health than instant coffee. And it tastes nicer as well.
They will have a difficult year next year as well.
You don't usually use 'also', 'too', or 'as well' in negative clauses. Don't say, for example, 'I'm not hungry and she's not hungry too'. You say 'I'm not hungry and she's not hungry either', 'I'm not hungry and neither is she', or 'I'm not hungry and nor is she'.
Edward wasn't at the ceremony, either.
'I don't normally drink coffee in the evening.' 'Neither do I.'
Collins COBUILD English Usage © HarperCollins Publishers 1992, 2004, 2011, 2012