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 catastrophic is "relating to extreme misfortune.", the definition for serenity is "Calmness.", and the definition for derivative is "Lacking originality."

The definition for surplus is "Excess." Used in a sentence: Trevor decided to freeze the surplus chili for next week's tailgate party. The definition for entangle is "to involve in trouble.", the definition for precept is "A general rule of action.", and the definition for commemorate is "To mark by a ceremony."

The definition for recrimination is "A retaliatory accusation." Used in a sentence: Frank, who was wounded by Sally's remark, made a bitter recrimination. The definition for brandish is "to shake or wave menacingly.", the definition for naive is "Lacking worldy wisdom.", and the definition for rehash is "To discuss again."

The definition for plaudits is "Enthusiastic approval." Used in a sentence: Allison's painting met with plaudits from the critics, who had dismissed her earlier work. The definition for plaudits is "enthusiastic approval.", the definition for curtail is "To make less.", and the definition for repel is "To resist, reject."

The definition for serenity is "Calmness." Used in a sentence: The serenity of the glassy sea soothed the sailors after the big storm. The definition for commemorate is "to mark by a ceremony.", the definition for iridescent is "Having a lustrous or attractivve quality.", and the definition for exception is "A case to which the rule does not apply."