say it: SED-uh-tiv
sedative is a noun and adjective meaning "a drug that reduces excitability and calms a person". It carries 2 recorded senses.
a drug that reduces excitability and calms a person
tending to soothe or tranquilize
“valium has a tranquilizing effect”
“took a hot drink with sedative properties before going to bed”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for sedative come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.