- Perspire is defined as to sweat.
An example of perspire is skin getting moist from being in a humid climate.
Exercise will make you perspire.Licensed from iStockPhoto
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verb per·spired, per·spir·ing, per·spires verb, intransitive
Origin: Latin perspīrāre, to blow steadily : per-, through; see per- + spīrāre, to breathe.
perspire - Medical Definition