Definition of too adverb from the Oxford Advanced Learner's Dictionary



    BrE BrE//tuː//
    ; NAmE NAmE//tuː//
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  1. 1  used before adjectives and adverbs to say that something is more than is good, necessary, possible, etc. He's far too young to go on his own. This is too large a helping for me/This helping is too large for me. Is it too much to ask for a little quiet? The dress was too tight for me. It's too late to do anything about it now. Accidents like this happen all too (= much too) often. It’s too soon to say if he’ll survive. It’s only too easy for them to deny responsibility.
  2. 2  (usually placed at the end of a clause) also; as well Can I come too? When I've finished painting the bathroom, I'm going to do the kitchen too. Which Word?also / as well / too Also is more formal than as well and too, and it usually comes before the main verb or after be:I went to New York last year, and I also spent some time in Washington. In British English it is not usually used at the end of a sentence. Too is much more common in spoken and informal English. It is usually used at the end of a sentence:‘I’m going home now.’ ‘I’ll come too.’. In British English as well is used like too, but in North American English it sounds formal or old-fashioned. When you want to add a second negative point in a negative sentence, use not…either:She hasn’t phoned and she hasn’t written either. If you are adding a negative point to a positive one, you can use not… as well/​too:You can have a burger, but you can’t have fries as well. see also me-too
  3. 3used to comment on something that makes a situation worse She broke her leg last week—and on her birthday too!
  4. 4  very I'm not too sure if this is right. I'm just going out—I won't be too long. She's none too (= not very) clever.
  5. 5used to emphasize something, especially your anger, surprise or agreement with something ‘He did apologize eventually.’ ‘I should think so too!’ ‘She gave me the money.’ ‘About time too!’
  6. Word OriginOld English, stressed form of to, spelled too from the 16th cent.Idioms
    be too much (for somebody)
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     to need more skill or strength than you have; to be more difficult, annoying, etc. than you can bear
    (British English, informal) used to say that there is no doubt about something ‘We need to stick together.’ ‘Too right!’ ‘I'll have to do it again.’ ‘Too right you will.’
See the Oxford Advanced American Dictionary entry: too