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 stealth is "the act of moving secretly or unnoticed.", the definition for onset is "Beginning.", and the definition for heinous is "Shockingly evil."

The definition for sociable is "Inclined to seek companionship." Used in a sentence: The sociable Glenda was delighted to receive the party invitation. The definition for catastrophic is "relating to extreme misfortune.", the definition for diffident is "Lacking self–confidence.", and the definition for drab is "Dull, monotonous."

The definition for gravity is "Importance, significance." Used in a sentence: Understanding the gravity of his error, Ken offered his humblest apology. The definition for mandate is "an official order or commission to do something.", the definition for pantomime is "Telling a story through gestures.", and the definition for exception is "A case to which the rule does not apply."

The definition for raspy is "rough, grating." Used in a sentence: After shouting to his players through the long game, the coach's voice was raspy. The definition for untenable is "not able to be defended.", the definition for demeanor is "Behavior towards others.", and the definition for clarity is "Clearness."

The definition for accommodate is "To give consideration to." Used in a sentence: The hospitable couple was happy to accommodate the needs of their finicky guest. The definition for celebrated is "widely known, respected.", the definition for ecstatic is "Overwhelmingly emotional.", and the definition for melee is "A tumultuous fight among several people."