Given a category and a set of five words, find the word from the set that does not belong (i.e. is the least relevant) with the other words in the category. Words are separated by commas.
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Question: Category: ocean 
Words: signal, timely, brine, flow, current

Answer: timely


Question: Category: emotional status 
Words: ashamed, down, emotional upsets, disgusted, ground

Answer: ground


Question: Category: shady activities 
Words: fix, fudge, wrongful, falsehood, heavy

Answer:
heavy