For "Calm":
* Tranquilize: To make calm or peaceful.
* Pacify: To make calm or quiet; to appease.
* Compose: To make calm or steady, especially after excitement or disturbance.
* Assuage: To make less intense or severe; to calm.
* Quell: To put an end to; to subdue or suppress.
* Settle: To become calm or quiet.
* Relax: To become less tense or anxious.
* Ease: To make more comfortable or less painful.
For "Soothe":
* Comfort: To make someone feel less sad or worried.
* Relieve: To make something less unpleasant or painful.
* Mitigate: To make something less severe or harmful.
* Alleviate: To make something less severe or painful.
* Mollify: To make someone less angry or upset.
* Appease: To satisfy or pacify someone.
* Placate: To calm or appease someone.
* Conciliate: To win over someone by being friendly or agreeable.
For "Still":
* Quiescent: In a state of inactivity or dormancy.
* Serene: Calm and peaceful.
* Tranquil: Peaceful and quiet.
* Unruffled: Not disturbed or upset.
* Unperturbed: Not worried or upset.
* Motionless: Not moving.
* Silent: Without any sound.
* Stagnant: Not moving or flowing.
For "Allay":
* Dispel: To cause something to disappear or vanish.
* Diminish: To make something smaller or less intense.
* Reduce: To make something smaller or less in amount.
* Abate: To become less intense or severe.
* Extinguish: To put out or stop something.
* Suppress: To prevent something from being expressed or released.
* Counteract: To oppose or neutralize the effects of something.
* Neutralize: To make something harmless or ineffective.
These are just a few suggestions, and the best words to use will depend on the specific context.