Question 1

What does "gook up" mean?

Accepted Answer

To cover or block something with a thick, sticky, or messy substance.

Question 2

How do you use "gook up" in a sentence?

Accepted Answer

The old engine was all gooked up with sludge and needed a full clean.

Question 3

Is "gook up" formal or informal?

Accepted Answer

"gook up" is register-neutral — appropriate in both casual and formal contexts. Very informal and relatively rare. 'Gook' is a slang word for a thick, sticky, unpleasant substance. Note that 'gook' is also a highly offensive racial slur — this phrasal verb should be used with extreme caution. The verb sense with 'up' refers only to applying a messy substance. Learners should be aware of the offensive use of the base word.

gook up

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