Can the word "perspired" be used as a passive verb, e.g., "his body was heavily perspired"?
closed as general reference by FumbleFingers, MετάEd, Daniel δ, StoneyB, Noah Sep 30 '12 at 4:28
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It can't be used the way you have it here, but it could be passive.
Perspire can be a transitive verb according to dictionary.com, although I don't think I've ever seen it used that way. When it takes a direct object, it means "to emit through the pores" (e.g., He perspired blood.) I think it's probably so rarely used this way because it's almost always redundant--what else would you perspire but sweat?
This means that if you use it passively, the subject is the sweat, not the sweaty body (e.g., The gross wet spot on the treadmill was perspired by the last person to use it.) I think it's kind of an awkward use, but it doesn't appear to have anything grammatically wrong with it.