When a person smokes enough marijuana to feel its effects, but not enough to alter competence at regular daily tasks or create a lasting low after the effects have worn off.

Becoming functionally high is a skill that comes naturally for some, and for others takes a long time to develop and master.
Person 1: I just got some killer bud from a friend of mine. Wanna smoke?

Person 2: Ok, but I have work in an hour. I guess I'll go in functionally high.
by DJAlexxander September 7, 2011
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When you use a vape (mflb) to smoke bud and it hit's just right and you are able to go out and be high with people around, but no one notices.
Person: Dude how are you able to go out a be yourself and still be high?
Me: I use a (mflb) and it hit's just right, so it gives me a functional high.
by Andy'sCandy February 1, 2016
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A term used in the case of mental disorders. Someone with a disorder who can conceal his symptoms or participate in society is considered to be high functioning.
Autism in combination with an IQ of 70 or higher is called high functioning autism.

Bill may be a psychopath, but he is capable of managing a job and family without doing seriously harm to anyone - I think he's high functioning.
by justErinn August 2, 2016
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A way of saying somebody is not doing too bad for a dysfunctional, fucked up guy.
He is high functioning enough to complete a sentence, but he's still not walking straight and chewing bubblegum at the same time yet, he's gonna be 40 years old soon, oh well.
by Solid Mantis January 1, 2020
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1. Sherlock Holmes

2. Not a psychopath

3. Not a hero
"Do your research, I'm not a psychopath, I'm a high functioning sociopath."

"A high-functioning sociopath. With your number."
by The Empty Hearse January 13, 2014
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An excuse term alcoholics use to justify their continued self-destruction.
Joe: "Wow, James is drinking and it's only 7 AM."
Mike: "He's a high functioning alcoholic. He says he needs it to function."
Joe: "So he's a severe alcoholic who needs help then."
by Super Thicc November 22, 2020
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A psychopath who has a stable lifestyle and usually possess high status and influence in society. They can be anyone- CEOs, millionaires, politicians , doctors. But inspit of their high functioning they are still people without a shred of empathy or a conscience
James Bond is a high functioning psychopath.
by Default_User September 4, 2015
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