placatory
intended to soothe, calm, or appease
Root
- plac: please, soothe, settle into calm
Other words with the plac root
- complacent: self-satisfied and unaware of risk
- complaisant: eager to please or agree with others
- implacable: unable to be appeased
- placate: to calm someone down
- placebo: inactive treatment that may still produce a perceived benefit
- placid: calm, peaceful, and undisturbed
- placidity: calmness or peaceful stillness
Placatory language is pre-emptive calm: words chosen to soothe before anger hardens.
He sent a placatory message before the disagreement hardened into a feud.
Placatory is the adjective you want for tone. A placatory email does not win the whole argument; it lowers the volume so the argument can keep breathing.