What does jinx mean?

[moony]

English Language Tests, Intermediate level

ESL/EFL Test #385 "English Slang Idioms (116)", question 5

"I love hanging out with your brother. That guy is hilarious! He's a ......... a minute!" Jane told Roxanne.

(a) smile
(b) jinx
(c) laugh
(d) downer

English Language Tests, Intermediate level

ESL/EFL Test #385 "English Slang Idioms (116)", answer 5

"I love hanging out with your brother. That guy is hilarious! He's a laugh a minute!" Jane told Roxanne.

Correct answer: (c) laugh
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what does jinx mean?

moony

[Mister Micawber]

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Do you have a DICTIONARY?
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Native English teacher at Mister Micawber's

[Xavierka]

Shouldn't it be: He is a laugh-a-minute?

[Yankee]

Hi Xavierka

I would only hyphenate those words if I used them as a single adjective directly in front of a noun:

- The new comedy is a laugh-a-minute treat for the whole family.
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"Nearly all men can stand adversity, but if you want to test a man's character, give him power." ~ Abraham Lincoln