Based on feeling:
* Cheerful: This emphasizes the opposite of fear and unease.
* Comforting: This implies a sense of safety and relaxation.
* Pleasant: This captures the opposite of unsettling or unpleasant.
* Reassuring: This emphasizes the opposite of anxiety and doubt.
Based on atmosphere:
* Inviting: This suggests a welcoming and friendly environment.
* Warm: This implies a feeling of safety and coziness.
* Bright: This contrasts the darkness and gloom often associated with "spooky."
* Lighthearted: This emphasizes a lack of seriousness or tension.
Based on the cause of spookiness:
* Safe: This implies an absence of danger or threat.
* Familiar: This contrasts the unknown and unfamiliar that can be scary.
* Ordinary: This emphasizes the opposite of strange or mysterious.
* Rational: This implies a lack of supernatural or unexplained elements.
Ultimately, the best opposite for "spooky" depends on the context and what you want to communicate.