The definition for beneficial is "Helpful." Used in a sentence: there is no doubt that eating vegetables is beneficial to one's health. The definition for iridescent is "having a lustrous or attractivve quality.", the definition for surplus is "Excess.", and the definition for clairvoyance is "Ability to see things beyond ordinary perception."

The definition for duplicity is "Deceptive thought, speech, or action." Used in a sentence: The life of an undercover detective is filed with necessary duplicity. The definition for grandiose is "with an affectation of grandeur.", the definition for repentant is "Feeling regret.", and the definition for hedonism is "Belief that pleasure is the sole aim of life."

The definition for rancorous is "Marked by deep ill–will." Used in a sentence: The rancorous competition between the two chess clubs actually ended in a brawl. The definition for mediate is "to come between parties in order to reconcile.", the definition for rail is "To scold in harsh language.", and the definition for commemorate is "To mark by a ceremony."

The definition for colossal is "Immense, enormous." Used in a sentence: After pushing with all his might, Frank realized he could never move the colossal boulder. The definition for mediate is "to come between parties in order to reconcile.", the definition for accessible is "Easy to reach or to approach.", and the definition for demeanor is "Behavior towards others."

The definition for melodious is "Having a pleasing melody." Used in a sentence: The melodious sounds of the symphony soothed Tim after his trying day. The definition for disconcert is "to throw into confusion.", the definition for impenitent is "Lacking remorse.", and the definition for finite is "Having definite limits."