If you’re stuck on the “Key neurotransmitter” crossword clue from the 7 Little Words puzzle dated October 26, 2025, we’re here to help you solve it and complete your game!
The 9-letter answer to this clue is **SEROTONIN**.
### About the Clue
**Key neurotransmitter** refers to a neurochemical that transmits nerve impulses across a synapse. Neurotransmitters play critical roles in communication between nerve cells.
### Why SEROTONIN?
Serotonin is a well-known neurotransmitter involved in regulating sleep, mood, depression, and memory, making it a perfect fit for the clue.
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### Related 7 Little Words Clues and Answers
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Understanding clues like “Key neurotransmitter” can often unlock multiple answers in your puzzle, so keep this knowledge handy!
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Whether you’re a casual solver or a crossword enthusiast, knowing the role of neurotransmitters like serotonin helps enhance both your vocabulary and general knowledge. Keep solving and enjoy the puzzles!
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