tranquilize

tran·quil·ize also tran·quil·lize  (trngkw-lz, trn-)

v. tran·quil·ized also tran·quil·lized, tran·quil·iz·ing also tran·quil·liz·ing, tran·quil·iz·es also tran·quil·liz·es

v.tr.

1. To make tranquil; pacify: "Nothing contributes so much to tranquilize the mind as a steady purpose" (Mary Shelley).

2. To sedate or relieve of anxiety or tension by the administration of a drug.

v.intr.

1. To become tranquil; relax.

2. To have a calming or soothing effect.

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tranquil·i·zation (-kw-l-zshn) n.

Thesaurus

Verb	1.	tranquilize - make calm or still; "quiet the dragons of worry and fear" calm, still, tranquillise, tranquillize, calm down, quiet, quieten, lull lull - calm by deception; "Don't let yourself be lulled into a false state of security" compose - calm (someone, especially oneself); make quiet; "She had to compose herself before she could reply to this terrible insult" appease, assuage, conciliate, gentle, gruntle, lenify, mollify, pacify, placate - cause to be more favorably inclined; gain the good will of; "She managed to mollify the angry customer" reassure, assure - cause to feel sure; give reassurance to; "The airline tried to reassure the customers that the planes were safe" comfort, console, solace, soothe - give moral or emotional strength to
	2.	tranquilize - cause to be calm or quiet as by administering a sedative to; "The patient must be sedated before the operation" sedate, tranquillise, tranquillize, calm affect - act physically on; have an effect upon; "the medicine affects my heart rate" hypnotise, hypnotize, mesmerise, mesmerize - induce hypnosis in