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 dubious is "questionable.", the definition for onset is "Beginning.", and the definition for duplicity is "Deceptive thought, speech, or action."

The definition for euphoria is "Feeling of great happiness." Used in a sentence: Cassandra was overcome with euphoria when she met her long–lost sister. The definition for repentant is "feeling regret.", the definition for curtail is "To make less.", and the definition for negate is "To make invalid."

The definition for aerate is "To supply with air." Used in a sentence: Every spring, Soloman used his tiller to aerate the compact soil. The definition for retroactive is "effective as of a prior time or condition.", the definition for extenuating is "Partially excusing.", and the definition for lurid is "Causing horror, shocking."

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 raucous is "noisy, rowdy.", the definition for drab is "Dull, monotonous.", and the definition for naive is "Lacking worldy wisdom."

The definition for promote is "To contribute to the growth or prosperity of." Used in a sentence: The promote peace, the diplomat hosted a talk between the warring nations. The definition for epistolary is "contained or carried on in letters.", the definition for grandiose is "With an affectation of grandeur.", and the definition for servile is "Fearfully submissive."