The definition for corroborate is "To support with evidence." Used in a sentence: "Unless you can corroborate your story, it will not be admissible in court," the attorney told his client. The definition for equitable is "fair and equal.", the definition for serenity is "Calmness.", and the definition for commemorate is "To mark by a ceremony."

The definition for rail is "To scold in harsh language." Used in a sentence: Clay began to cry as his irate manager railed at him for missing the deadline. The definition for combative is "eager to fight.", the definition for punctual is "On time.", and the definition for servile is "Fearfully submissive."

The definition for derivative is "Lacking originality." Used in a sentence: Critics panned the movie as a derivative version of last year's Best Picture. The definition for indecorous is "in bad taste.", the definition for eulogy is "Speech or writing in praise of deceased.", and the definition for recrimination is "A retaliatory accusation."

The definition for repentant is "Feeling regret." Used in a sentence: The repentant Dana admitted to cheating on the test. The definition for penurious is "extrememly stingy.", the definition for lenient is "Mild or tolerant.", and the definition for negate is "To make invalid."

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 duplicity is "deceptive thought, speech, or action.", the definition for opportune is "Suitable or convenient.", and the definition for fragile is "Delicate."