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 stern is "harsh, severe.", the definition for straddle is "To favor opposing sides.", and the definition for insinuate is "To suggest indirectly."

The definition for comprehensible is "Understandable." Used in a sentence: Shannon spoke slowly so her directions would be comprehensible to her foreign visitor. The definition for servile is "fearfully submissive.", the definition for implausible is "Unbelievable.", and the definition for scamper is "To run quickly."

The definition for curtail is "To make less." Used in a sentence: Doreen decided to curtail her spending after she bounced a check. The definition for disconcert is "to throw into confusion.", the definition for derivative is "Lacking originality.", and the definition for absolve is "To forgive; to free from guilt."

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 naive is "lacking worldy wisdom.", the definition for embellish is "To decorate.", and the definition for melee is "A tumultuous fight among several people."

The definition for untenable is "Not able to be defended." Used in a sentence: Rashid made the untenable statement that George Washington was the second president of the United States. The definition for incisive is "impressively direct and decisive.", the definition for pretense is "False intention or purpose.", and the definition for insolence is "Boldness or rudeness."