know-all:
(also ‘know-it-all’; plural: ‘know-alls‘ / ‘know-it-alls‘; pronunciation: the letter ‘k’ is silent)
a know-all/know-it-all
a person who behaves as if he knew everything;
a person who does not take others’ advice or does not try to listen to others because he thinks or pretends that ‘he knows everything in the world’,
(I don’t have to listen to you; I’m a ‘know-it-all’!)
Betty is such a know-all that her friends are tired of her trying to dominate them in everything.
Mac knows more about current affairs than most others, but the way he acts as a ‘know-it-all’ irritates his colleagues and some of them have started making fun of him.
Though there are some real ‘know-it-alls’ among us, most of the know-it-alls we encounter get their information from cheap or unreliable sources, but they believe or even argue that the information they have is genuine.
Most senior political analysts remark that Americans must stop being know-it-alls because it has been proven more than once that their policies are not all that good.
