The definition for combustion is "Act of burning." Used in a sentence: Campers must use fire with great caution to prevent combustion of the parched brush. The definition for serenity is "calmness.", the definition for lenient is "Mild or tolerant.", and the definition for epitaph is "Brief statement honoring a dead person."

The definition for exasperation is "The state of being irritated." Used in a sentence: The longer Jorge waited in line at the ticket counter, the more his exasperation grew. The definition for epistolary is "contained or carried on in letters.", the definition for colossal is "Immense, enormous.", and the definition for opportune is "Suitable or convenient."

The definition for foil is "One that enhances or underscores by contrast." Used in a sentence: The sweet cookie was a perfect foil to the sour lemon sorbet. The definition for illuminate is "to make clear.", the definition for prominence is "Importance.", and the definition for inauspicious is "Not favorable."

The definition for straddle is "To favor opposing sides." Used in a sentence: Kia straddled the issue, not wanting to say whether James or Tara was right. The definition for polarize is "to break up into opposing groups.", the definition for precept is "A general rule of action.", and the definition for inflammatory is "Tending to excite anger."

The definition for mediate is "To come between parties in order to reconcile." Used in a sentence: The diplomatic Henry was able to mediate between the quarreling sisters. The definition for drub is "to defeat decisively.", the definition for solace is "Source of consolation.", and the definition for eulogy is "Speech or writing in praise of deceased."