spoil
v.v. to ruin something or make it less good. It can also mean giving a child too much of what they want so they become selfish.
v. to diminish or destroy the value, quality, or pleasure of something; to harm the character of a child by excessive indulgence. Transitive — requires a direct object.
The rain will spoil our picnic today.
I do not want to spoil the movie for you by telling you the ending.
The developer's decision to build a high-rise hotel threatened to spoil the pristine view that had drawn tourists to the coastal village for decades.
From Middle English spoilen, spuylen, borrowed from Old French espoillier, espollier, espuler, from Latin spoliāre (“pillage, ruin, spoil”).
The verb is transitive and takes a direct object. In the context of food, it is often used intransitively to mean 'to decay'.
The milk was spoiled by the heat.The milk spoiled in the heat.When referring to food going bad, 'spoil' is usually used intransitively rather than in the passive voice.