This puzzle's key theme word - Answers with 3 Letters

Question:

This puzzle's key theme word

Answer:

ICE

Length:

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This puzzle's obvious theme word
Word before the first word in this puzzle's theme answers
Just making things up, or a synonym for a three-word phrase describing this puzzle's theme entries
Pithy sayings (four well-known ones containing the circled word are the keys to unlocking this puzzle's theme)
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