The definition for dubious is "Questionable." Used in a sentence: Karl found Kevin's claim that he was sick dubious, as he had just seen him playing football. The definition for eloquent is "fluent, expressive.", the definition for rancorous is "Marked by deep ill–will.", and the definition for retroactive is "effective as of a prior time or condition."

The definition for repentant is "Feeling regret." Used in a sentence: The repentant Dana admitted to cheating on the test. The definition for melodious is "having a pleasing melody.", the definition for implausible is "Unbelievable.", and the definition for impenitent is "Lacking remorse."

The definition for futile is "Without purpose, completely ineffective." Used in a sentence: Arguing with Andrew is futile because he never changes his mind. The definition for aerate is "to supply with air.", the definition for eloquent is "Fluent, expressive.", and the definition for curtail is "To make less."

The definition for procrastinate is "To put off intentionally." Used in a sentence: Yvonne's father urged, "Don't procrastinate. Clean your room right away." The definition for salvage is "to save from ruin.", the definition for authoritarian is "Favoring absolute obedience to authority.", and the definition for flourish is "To make bold, sweeping gestures."

The definition for stealth is "The act of moving secretly or unnoticed." Used in a sentence: The burglar took the ring by stealth, slipping it from the sleeping woman's finger. The definition for melee is "a tumultuous fight among several people.", the definition for extant is "Currently existing.", and the definition for redouble is "To make twice as great."