Nigs...

1) Agreed

2) Oxforddictionaries.com - check out #1.2

3) 'False' is equally as applicable as 'fictitious', AFAIC. The BrexShit campaigners ran a campaign which used falsehoods to take advantage of people's fears and prejudices. No substance, no facts, no plan, nothing other than a range of falsehoods varying between dark hints to barefaced lies.

4) If you, Keefy, Boob-ad, and Teribiains voted for the most momentous, far-reaching, and economically-dangerous change in UK history since 1945 on the basis of nothing more than 'hope', driven by a campaign of rabble-rousing and fear-mongering, you are all even more ridiculously irresponsible than I thought.

5) You tell me.