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 precept is "a general rule of action.", the definition for periodic is "Occurring at regular intervals.", and the definition for brandish is "To shake or wave menacingly."

The definition for incumbent is "Necessary as a duty or responsibility." Used in a sentence: It was incumbent on Jack to attend his father's retirement party. The definition for corrosive is "bitingly sarcastic.", the definition for equitable is "Fair and equal.", and the definition for trove is "Valuable collection."

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 ecstatic is "overwhelmingly emotional.", the definition for gravity is "Importance, significance.", and the definition for defiant is "Showing bold resistance."

The definition for demean is "To lower status." Used in a sentence: The embarrassing photograph demeaned the candidate in the eyes of the voters. The definition for precept is "a general rule of action.", the definition for pretense is "False intention or purpose.", and the definition for incidental is "Minor."

The definition for demeanor is "Behavior towards others." Used in a sentence: Carlos was well liked because of his charming demeanor. The definition for pretentious is "making unjustified claims.", the definition for implement is "To carry out or accomplish.", and the definition for elate is "To fill with joy."