The definition for adversary is "One who opposes or resists." Used in a sentence: Franklin hoped to defeat his adversary in the afternoon's tennis match. The definition for incumbent is "necessary as a duty or responsibility.", the definition for extol is "To praise highly.", and the definition for melodious is "Having a pleasing melody."

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 disconcert is "to throw into confusion.", the definition for flagrant is "Noticeably offensive.", and the definition for genial is "Sympathetic, friendly."

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 catastrophic is "relating to extreme misfortune.", the definition for celebrated is "Widely known, respected.", and the definition for civility is "Politeness."

The definition for benevolent is "Kind, helpful." Used in a sentence: Sherman revealed his benevolent side when he offered to help Carter with his homework. The definition for apathetic is "showing little or no emotion.", the definition for insinuate is "To suggest indirectly.", and the definition for distortion is "The act of twisting out of shape."

The definition for accommodate is "To give consideration to." Used in a sentence: The hospitable couple was happy to accommodate the needs of their finicky guest. The definition for ethical is "conforming to accepted standards.", the definition for ecstatic is "Overwhelmingly emotional.", and the definition for exasperation is "The state of being irritated."