reassurance
n.something that is said or done to make you feel less worried or afraid. It helps you feel more confident that everything is okay.
n.the action of removing someone's doubts or fears; a statement or gesture intended to restore confidence. Often follows verbs of providing or seeking.
“The doctor gave me some reassurance about my health.”
“Despite the market's volatility, the CEO's speech provided the reassurance that investors needed to keep their shares.”
“The legal team sought constant reassurance from the senior partner that the precedents cited in the brief would withstand a rigorous challenge in the appellate court.”
Uncountable when referring to the abstract act of comforting; countable when referring to specific statements or instances.
From re- + assurance.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.