The definition for diffident is "Lacking self–confidence." Used in a sentence: The diffident student never raised her hand in class, even when she knew the answer. The definition for ploy is "a contrived plan.", the definition for buffoonery is "Foolish behavior.", and the definition for flagrant is "Noticeably offensive."

The definition for unscrupulous is "Lacking principles." Used in a sentence: The unscrupulous salesman was fired for lying to his customers. The definition for inflammatory is "tending to excite anger.", the definition for prune is "To reduce by removing excess.", and the definition for aerate is "To supply with air."

The definition for garish is "Offensively bright." Used in a sentence: The garish wallpaper offended Jerome, who preferred subtle colors. The definition for untenable is "not able to be defended.", the definition for avian is "Relating to birds.", and the definition for melee is "A tumultuous fight among several people."

The definition for opportune is "Suitable or convenient." Used in a sentence: Quan stepped onto the platform at the most opportune time, just as the train pulled in. The definition for preclude is "to rule out in advance.", the definition for aerate is "To supply with air.", and the definition for clairvoyance is "Ability to see things beyond ordinary perception."

The definition for punctual is "On time." Used in a sentence: Ron was worried when the usually punctual Amanda was late for the show. The definition for elate is "to fill with joy.", the definition for inflammatory is "Tending to excite anger.", and the definition for brandish is "To shake or wave menacingly."