late 14c. (implied in suppressing) "be burdensome;" 1520s as "put down by force or authority," from Latin suppressus, past participle of supprimere "press down, stop, hold back, check, stifle," from assimilated form of sub "below, under" (see sub-) + premere "to press, hold fast, cover, crowd, compress" (from PIE root *per- (4) "to strike"). Sense of "prevent or prohibit the circulation of" is from 1550s of publications; medical use from 1620s. Related: Suppressed; suppressing.
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