Third person singular present of satisfy; to fulfill the desires, expectations, needs, or demands of someone or something.
From Latin satisfacere, combining satis (enough) and facere (to make or do). The word literally means 'to make enough' and entered English through Old French in the 14th century.
The root 'satis' meaning 'enough' also gives us 'satiate' and 'saturate' - all about reaching a point of fullness. Psychologically, satisfaction is tricky because our brains are wired to always want more, making true contentment a rare and precious state.
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