| superannuate | (verb) retire or become ineligible because of old age or infirmity | - |
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| (verb) become obsolete | - |
| (verb) declare to be obsolete | - |
| (verb) retire and pension (someone) because of age or physical inability | - |
| supercharge | (verb) increase the pressure on a gas or liquid | Synonyms: pressurise, pressurize |
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| (verb) increase or raise | Synonyms: advance, boost |
| superfetate | (verb) conceive when a fetus is already present in the uterus | - |
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| superimpose | (verb) place on top of | Synonyms: lay over, superpose |
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| superinfect | (verb) infect (an infected cell) further or infect a cell already containing similar organisms | - |
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| superintend | (verb) watch and direct | Synonyms: manage, oversee, supervise |
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| superordinate | (verb) place in a superior order or rank | - |
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| superpose | (verb) place (one geometric figure) upon another so that their perimeters coincide | - |
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| (verb) place on top of | Synonyms: lay over, superimpose |
| superscribe | (verb) write on the outside or upper part of | - |
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| (verb) write on the top or outside | - |
| supersede | (verb) take the place or move into the position of | Synonyms: replace, supervene upon, supplant |
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| supervene | (verb) take place as an additional or unexpected development | - |
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| supervise | (verb) keep tabs on; keep an eye on; keep under surveillance | Synonyms: monitor |
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| (verb) watch and direct | Synonyms: manage, oversee, superintend |