The definition for trove is "Valuable collection." Used in a sentence: Walter's trove of vintage baseball cards was worth thousands of dollars. The definition for surplus is "excess.", the definition for insinuate is "To suggest indirectly.", and the definition for periodic is "Occurring at regular intervals."

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 salvage is "to save from ruin.", the definition for induce is "To influence or cause.", and the definition for compulsion is "An irresistible impulse."

The definition for stern is "Harsh, severe." Used in a sentence: The stern principal canceled the prom after the seniors played a silly prank. The definition for opportune is "suitable or convenient.", the definition for demean is "To lower status.", and the definition for periodic is "Occurring at regular intervals."

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 authoritarian is "favoring absolute obedience to authority.", the definition for diffident is "Lacking self–confidence.", and the definition for commemorate is "To mark by a ceremony."

The definition for illuminate is "To make clear." Used in a sentence: Her excellent lecture illuminated the complicated subject of nuclear physics. The definition for compulsion is "an irresistible impulse.", the definition for incumbent is "Necessary as a duty or responsibility.", and the definition for absolve is "To forgive; to free from guilt."