invagilator 

One who uses cunning and guile to gain access to a woman’s inner virtue

That bloke is an adept invagilator. I expect he will be making her happy very soon

invagilator by Big Mac 64 September 13, 2021

Invalidator 

An invalidator is any person who is, for whatever reason, prone to being jealous and insecure. In order to think well of themselves, they will say and do whatever they can to harm the target of their jealousies and insecurities, and to discredit them in any way they can. This gives them a false sense of self-worth and superiority. They are all about bringing out the worst in others, and they will use any unscrupulous, malicious, or manipulative tactic in order to achieve this end.

The best ways to confront an invalidator may include simply ignoring them, proving their accusations to be false, or to respond to their negativity with kindness or humor.

Invalidator: "Bob is just useless jagoff. He isn't worth keeping around. We need to get rid of him."
Bob: "I believe you are mistaken, sir."
Invalditor: "Who cares? Go away. No one likes you here. You're a scumbag!"
Bob: "Is there a problem?"
Invalidator: "You're an asshole. We all know it. Get out of here. You're not worth it."
Bob: "I think your attitude is completely rude, sir."
Invalidator: "I'm not being rude. I'm just telling it to you like it is. No one else has the heart to tell you this, but you're a useless asshole. Nothing you say matters. You're not likeable. You're not a person. You are nobody. Know this. Believe it harder than anything else."
Bob: "Whatever you say."

Invalidator by Adam Bestler October 15, 2011

Invigilator 

A species rarely seen outside schools, invigilators are peculiar, quiet creatures. Although they can be both genders, they are mostly female. When communicating, they whisper, although they talk very little. The favourite activity of an invigilator is to watch students as they despair over their futures.

"Here we see the rarely spotted invigilator, approaching it's natural habitat, the exam room."

Invigilator by WEALLOVEHIM...ITSgavin May 18, 2017

invigilator 

the sorry sucker who volunteers to watch a bunch of pubescent children take a standardized test, instead of sleeping in on a Saturday morning.

1: "Hey, do you want to go do something on Friday night?"
2: "I would, but I am the invigilator Saturday"

invigilator by QueenEJizabeth October 27, 2014

patent invalidator 

A person who researches prior art of a particular patent with the goal of finding the best combination of references that when combined, suggest the patent is likely not valid.

The patent invalidator and the firm’s patent litigator are working together to fight the patent troll’s claim assertions.

patent invalidator by WordyWillSmith January 18, 2019

Invalidator 

Someone who generalizes what you said specifically to dilute its specific power to render your statement useless.

I m too tired to go to the party. When asked if I want to join in and "come over" , I simply say "No thank you, Im tired....".
My invalidator responds with , "We are ALL tired!"
This just throws what I just said into the trash can. I would not of said that Im tired if I had not meant it...

Invalidator by max60605 December 27, 2016

Invigilator 

A made up word for use in replacing the word proctor at stupid universities.

The exam was supervised by the invigilator.

Invigilator by A vary reliable source April 4, 2016