The definition for avian is "Relating to birds." Used in a sentence: The old man affectionately referred to pigeons as his "avian friends." The definition for prudent is "marked by wisdom, shrewd.", the definition for catastrophic is "Relating to extreme misfortune.", and the definition for extant is "Currently existing."

The definition for commemorate is "To mark by a ceremony." Used in a sentence: Each year, the Franklins commemorate their anniversary by visiting the site of their first date. The definition for inviolable is "secure from assault of trespass.", the definition for extol is "To praise highly.", and the definition for disconcert is "To throw into confusion."

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 curtail is "to make less.", the definition for accommodate is "To give consideration to.", and the definition for pantomime is "Telling a story through gestures."

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 heinous is "shockingly evil.", the definition for ecstatic is "Overwhelmingly emotional.", and the definition for finite is "Having definite limits."

The definition for turpitude is "Essential baseness, depravity." Used in a sentence: The turpitude of the villain in the movie offended most audiences. The definition for retroactive is "effective as of a prior time or condition.", the definition for incongruous is "Not harmonious, incompatible.", and the definition for mandate is "An official order or commission to do something."