The definition for diffident is "Lacking self–confidence." Used in a sentence: The diffident student never raised her hand in class, even when she knew the answer. The definition for gravity is "importance, significance.", the definition for commemorate is "To mark by a ceremony.", and the definition for exalt is "To elevate by praise."

The definition for gruff is "Rough or stern in manner or speech." Used in a sentence: Heidi's grandfather was gruff, barking stern orders and hardly smiling. The definition for regale is "to amuse.", the definition for accentuate is "To emphasize.", and the definition for flaunt is "To display showily."

The definition for naive is "Lacking worldy wisdom." Used in a sentence: The naive Simon assumed that everyone was as simple and kind as he was. The definition for rehash is "to discuss again.", the definition for archaic is "Characteristic of an earlier time.", and the definition for prudent is "Marked by wisdom, shrewd."

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 illuminate is "to make clear.", the definition for accessible is "Easy to reach or to approach.", and the definition for scapegoat is "Someone who bears the blame for others."

The definition for heinous is "Shockingly evil." Used in a sentence: Eduardo's heinous betrayal of Lydia shocked even Latasha, who knew his evil ways. The definition for salvage is "to save from ruin.", the definition for ethical is "Conforming to accepted standards.", and the definition for corrosive is "Bitingly sarcastic."