The definition for ramble is "To wander, physically or in language." Used in a sentence: Professor Tan rambled during his lectures, frequently straying from the subject. The definition for incumbent is "necessary as a duty or responsibility.", the definition for ethical is "Conforming to accepted standards.", and the definition for procrastinate is "To put off intentionally."

The definition for commemorate is "To mark by a ceremony." Used in a sentence: Each year, the Franklins commemorate their anniversary by visiting the site of their first date. The definition for pantomime is "telling a story through gestures.", the definition for onset is "Beginning.", and the definition for penurious is "Extrememly stingy."

The definition for extol is "To praise highly." Used in a sentence: The statesman extolled the ambassador who single–handedly negotiated the peace treaty. The definition for aesthete is "person having or affecting sensitivity to beauty.", the definition for incisive is "Impressively direct and decisive.", and the definition for illuminate is "To make clear."

The definition for preclude is "To rule out in advance." Used in a sentence: "Having cake now will preclude dessert later," said Amber's mother. The definition for melodious is "having a pleasing melody.", the definition for heed is "To pay attention to.", and the definition for opportune is "Suitable or convenient."

The definition for benefactor is "One who offers financial help." Used in a sentence: Michael's aunt and benefactor paid his college tuition. The definition for derelict is "abandoned.", the definition for buffer is "Protective barrier.", and the definition for accommodate is "To give consideration to."