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Etymology

 * literally, "forgo the sour for the sweet". The idiom comes from the fact that many local fruits of Thailand, such as mangoes, initially have sour taste but will become sweet if left for a period of time. Some people love to eat them when they are still sour, but some love to wait until they are sweet.

Verb

 * 1)  To refrain from doing or enjoying something in order to await a better thing.