The definition for appalling is "Inspiring dismay or disgust." Used in a sentence: Hector found his roommate's habit of leaving his dirty socks on the floor appalling. The definition for preclude is "to rule out in advance.", the definition for diffident is "Lacking self–confidence.", and the definition for comprehensible is "Understandable."

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 regurgitate is "to pour out or throw back.", the definition for abate is "Become less in amount or intensity.", and the definition for egotist is "Self–important person."

The definition for absolve is "To forgive; to free from guilt." Used in a sentence: Marta felt greatly relieved after her mother absolved her for breaking the vase. The definition for apathetic is "showing little or no emotion.", the definition for compulsion is "An irresistible impulse.", and the definition for illuminate is "To make clear."

The definition for untenable is "Not able to be defended." Used in a sentence: Rashid made the untenable statement that George Washington was the second president of the United States. The definition for naive is "lacking worldy wisdom.", the definition for rehash is "To discuss again.", and the definition for flaw is "An imperfection."

The definition for extol is "To praise highly." Used in a sentence: The statesman extolled the ambassador who single–handedly negotiated the peace treaty. The definition for entangle is "to involve in trouble.", the definition for unscrupulous is "Lacking principles.", and the definition for rail is "To scold in harsh language."