The definition for placebo is "An inactive substance used in medical testing." Used in a sentence: Tom, who had taken the placebo, found that his allergy symptoms did not go away. The definition for combustion is "act of burning.", the definition for promote is "To contribute to the growth or prosperity of.", and the definition for inviolable is "Secure from assault of trespass."

The definition for insinuate is "To suggest indirectly." Used in a sentence: Sinead, who did not like confrontation, insinuated that Beth was lying. The definition for perception is "capacity for seeing or understanding.", the definition for appraise is "To evaluate the worth of.", and the definition for melee is "A tumultuous fight among several people."

The definition for foil is "One that enhances or underscores by contrast." Used in a sentence: The sweet cookie was a perfect foil to the sour lemon sorbet. The definition for camaraderie is "spirit of friendship.", the definition for frugal is "Thrifty, cheap.", and the definition for belated is "Past the normal or proper time."

The definition for incisive is "Impressively direct and decisive." Used in a sentence: Samir's incisive leadership made him the natural choice for president of the company. The definition for mediate is "to come between parties in order to reconcile.", the definition for colossal is "Immense, enormous.", and the definition for derivative is "Lacking originality."

The definition for inflammatory is "Tending to excite anger." Used in a sentence: Garth's inflammatory remarks at the party made Gwen furious. The definition for hedonism is "belief that pleasure is the sole aim of life.", the definition for ethical is "Conforming to accepted standards.", and the definition for untenable is "Not able to be defended."