(noun)
1. A person who is not proficient in anything.
2. A person who lacks focus, constantly bouncing from one job to the next, while mastering none.
My friend Larry has been unsuccessful as a business man, a teacher, an artist and a musician. He's like a Jack-Of-No-Trades.
by TheyCallsMyNamesBrian February 4, 2009
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The other definitions are wrong.
A Jack of all Trades is someone who is decent at everything, but not especially adept at any one thing.
Red Mage from Final Fantasy is a Jack of all Trades.
by morbidgolem October 18, 2007
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A term used to describe someone who knows a lot about many things, but, with the second tag "master of none" added it transforms into a derogatory phrase meant to emphasize how mastery of one skill is important for deeper knowledge.

However, one, oft forgotten tag is the third one: "is oftentimes better than a master of one". Instantly, the term reverses meaning, symbolizing how a person who knows a lot about many things that integrates their skills allows them to surpass even a master of one.

Interesting phrase, nonetheless.
"Man, Tom knows a lot! He's a jack of all trades, aint he?"

"Yeah, but he probably doesn't know a lot about specifics. You know how it goes: Jack of all trades, master of none."

"Jack of all trades, master of one, is oftentimes better than master of one, man. Tom's pretty smart."
by Oldrego March 10, 2017
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A person who is skilled at a variety of different things, but not to the same level as a person who is specialised in one of these things.
Jack of all trades, master of none,
but ofttimes better than a master of one.
by eruditionfish November 15, 2008
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a person who is good at many things but has no particular specialty (often with master of none at the end)
My friend was a jack of all trades.
by The Return of Light Joker October 19, 2008
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A Jack of All Trades is a master at none, but often better than a master of one.
Person 1: You're a very well rounded person.
Person 2: I'm a Jack of All Trades.
by jeffyfromthebloc October 21, 2009
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Someone who is very good at doing a variety of useful things.
Justin and Sean would be the JACKS-OF-ALL-TRADES up in hurr.
by Joshiro007 February 24, 2003
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