"calm, quiet," 1660s, from Latin sedatus "composed, moderate, quiet, tranquil," past participle of sedare "to settle, calm," causative of sedere "to sit," from PIE root *sed- (1) "to sit." Related: Sedately.
sedate (v.)
"treat with sedatives," 1945, a back-formation from the noun derivative of sedative (adj.). The word also existed 17c. in a sense "make calm or quiet." Related: Sedated; sedating.
a quiet sedate nature
The patient must be sedated before the operation
secundine
secure
security
*sed-
sedan
sedate
sedation
sedative
sedentary
Seder
sederunt
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