The definition for catastrophic is "Relating to extreme misfortune." Used in a sentence: The effects of the massive hurricane were catastrophic. The definition for salvage is "to save from ruin.", the definition for conduit is "Means for transmitting or distributing.", and the definition for celebrated is "Widely known, respected."

The definition for stern is "Harsh, severe." Used in a sentence: The stern principal canceled the prom after the seniors played a silly prank. The definition for corroborate is "to support with evidence.", the definition for extol is "To praise highly.", and the definition for brandish is "To shake or wave menacingly."

The definition for placebo is "An inactive substance used in medical testing." Used in a sentence: Tom, who had taken the placebo, found that his allergy symptoms did not go away. The definition for solace is "source of consolation.", the definition for apathetic is "Showing little or no emotion.", and the definition for accentuate is "To emphasize."

The definition for demeanor is "Behavior towards others." Used in a sentence: Carlos was well liked because of his charming demeanor. The definition for genial is "sympathetic, friendly.", the definition for finite is "Having definite limits.", and the definition for extol is "To praise highly."

The definition for beneficial is "Helpful." Used in a sentence: there is no doubt that eating vegetables is beneficial to one's health. The definition for melodious is "having a pleasing melody.", the definition for prominence is "Importance.", and the definition for iridescent is "Having a lustrous or attractivve quality."