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 melodious is "having a pleasing melody.", the definition for naive is "Lacking worldy wisdom.", and the definition for commemorate is "To mark by a ceremony."

The definition for combative is "Eager to fight." Used in a sentence: The teacher suggested the combative student channel his aggression into boxing. The definition for onset is "beginning.", the definition for elate is "To fill with joy.", and the definition for negate is "To make invalid."

The definition for eulogy is "Speech or writing in praise of deceased." Used in a sentence: Ernesto delivered a moving eulogy at his uncle's funeral. The definition for abate is "become less in amount or intensity.", the definition for pantomime is "Telling a story through gestures.", and the definition for interminable is "Never ending, or seemingly endless."

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 unscrupulous is "lacking principles.", the definition for camaraderie is "Spirit of friendship.", and the definition for disdain is "Feeling of contempt."

The definition for periodic is "Occurring at regular intervals." Used in a sentence: The periodic innterruptions of the cuckoo clock prevented Li from concentrating. The definition for methodical is "performed in an orderly manner.", the definition for flaunt is "To display showily.", and the definition for prune is "To reduce by removing excess."