When you give someone a gift to earn his favor and make peace after a fight, this is an example of propitiate.
Origin of propitiate; from Classical Latin propitiatus, past participle of propitiare, to propitiate ; from propitius: see propitious
transitive verbpro·pi·ti·at·ed, pro·pi·ti·at·ing, pro·pi·ti·ates
Origin of propitiateLatin propitiāre, propitiāt-, from propitius, propitious; see propitious.
(third-person singular simple present propitiates, present participle propitiating, simple past and past participle propitiated)
Latin propitiÄre (“make favourable"), from propitius (“favourable, gracious").