ˌjack-of-ˈall-trades noun
[singular] someone who can do many different types of work, but who often is not very skilled at any of them

[TahlilGaran] Dictionary of Contemporary English ▲

jack of all trades
someone who has many skills or who does many different jobs.
Bill can do plumbing, carpentry, or a bit of gardening - he's a jack of all trades, really.

[TahlilGaran] English Idioms Dictionary ▲

jack of all trades
n., informal (Often followed by the words "master of none.") A person who is knowledgeable in many areas. Can be used as praise, or as a derogatory remark depending on the context and the intonation.
Peter is a jack of all trades; he can survive anywhere!
"How come Joe did such a sloppy job?" Mary asked. "He's a jack of all trades," Sally answered.

[TahlilGaran] English Idioms Dictionary ▲