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 corroborate is "to support with evidence.", the definition for absolve is "To forgive; to free from guilt.", and the definition for retroactive is "effective as of a prior time or condition."

The definition for flaw is "An imperfection." Used in a sentence: The otherwise perfect diamond had a tiny flaw that reduced its value. The definition for comparable is "similar, equivalent.", the definition for promote is "To contribute to the growth or prosperity of.", and the definition for diffident is "Lacking self–confidence."

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 equitable is "fair and equal.", the definition for camaraderie is "Spirit of friendship.", and the definition for abate is "Become less in amount or intensity."

The definition for discern is "To recognize as separate as distinct." Used in a sentence: The pastry connoisseur was able to discern Swiss from Belgian chocolate. The definition for impenitent is "lacking remorse.", the definition for flourish is "To make bold, sweeping gestures.", and the definition for parity is "Equality."

The definition for colossal is "Immense, enormous." Used in a sentence: After pushing with all his might, Frank realized he could never move the colossal boulder. The definition for embellish is "to decorate.", the definition for inauspicious is "Not favorable.", and the definition for incidental is "Minor."