The definition for oblivious is "Lacking awareness." Used in a sentence: Love–struck Charlie was oblivious to everyone but the object of his affection. The definition for pretense is "false intention or purpose.", the definition for avian is "Relating to birds.", and the definition for hedonism is "Belief that pleasure is the sole aim of life."

The definition for fickle is "Lacking constancy, changeable." Used in a sentence: The fickle Senji had a new best friend every month. The definition for promote is "to contribute to the growth or prosperity of.", the definition for heed is "To pay attention to.", and the definition for epistolary is "Contained or carried on in letters."

The definition for manifest is "Obvious." Used in a sentence: James finally made his affection manifest when he handed Jessica a red rose. The definition for mediate is "to come between parties in order to reconcile.", the definition for placebo is "An inactive substance used in medical testing.", and the definition for obnoxious is "Highly offensive."

The definition for appraise is "To evaluate the worth of." Used in a sentence: Simone, an expert in African sculpture, was asked to appraise the ambassador's collection of masks. The definition for exalt is "to elevate by praise.", the definition for straddle is "To favor opposing sides.", and the definition for extenuating is "Partially excusing."

The definition for derelict is "Abandoned." Used in a sentence: The derelict house was condemned as a public hazard. The definition for extol is "to praise highly.", the definition for oblivious is "Lacking awareness.", and the definition for catastrophic is "Relating to extreme misfortune."