def merge_list(wordlists):
    """
    this function merges all the wordlist(dictionary) into one, and return it

    :param wordlists: an array contain all the wordlist(dictionary type)
    :return: the merged word list (dictionary type)
    """
    mergelist = {}
    for wordlist in wordlists:
        for key in wordlist.keys():
            try:
                mergelist[key] += wordlist[key]
            except:
                mergelist.update({key: wordlist[key]})
    return mergelist