besides - definition and synonyms

adverb, preposition 

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Besides can be used in the following ways:
as a preposition (followed by a noun): Did you talk to anyone else besides Joan?
as an adverb (without a following noun): I’ve read all the books on the list and a few others besides.
as a way of starting a new statement and connecting it to the previous statement: I don’t want to go shopping. Besides, I haven’t got any money.
  1. 1
    in addition to someone or something else that is being mentioned

    A lot of them are studying other things besides Italian.

    There are cakes and sandwiches, and lots more besides.

    besides being/doing something:

    Besides being a teammate, he’s my friend.

  2. 2
    used when you are adding another stronger reason to support what you are saying

    It’s too late to invite any more people. Besides, you know how Tim hates parties.