tranquillise
1. [ verb ] make calm or still
Synonyms: calm still quiet tranquillize tranquilize lull quieten calm_down
Examples:

"quiet the dragons of worry and fear"

Related terms: agitate comfort reassure pacify lull compose hush repose
2. [ verb ] cause to be calm or quiet as by administering a sedative to
Synonyms: calm tranquilize tranquillize sedate
Examples:

"The patient must be sedated before the operation"

Related terms: stimulate affect hypnotize composure ataractic sedation
Similar spelling:   tranquilliser
  tranquillize
  tranquillizer
  tranquilize
  tranquillity
  tranquilizer
  tranquilly
  tranquilising
  tranquility
  tranquilizing
  trinuclear
  trinucleate