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 refurbish is "to brighten or freshen.", the definition for implement is "To carry out or accomplish.", and the definition for incongruous is "Not harmonious, incompatible."

The definition for anthology is "A collection of selected literary pieces." Used in a sentence: The writer was thrilled when his story was included in an anthology of American masterpieces. The definition for euphoria is "feeling of great happiness.", the definition for mundane is "Practical, ordinary.", and the definition for straddle is "To favor opposing sides."

The definition for catastrophic is "Relating to extreme misfortune." Used in a sentence: The effects of the massive hurricane were catastrophic. The definition for camaraderie is "spirit of friendship.", the definition for repentant is "Feeling regret.", and the definition for melee is "A tumultuous fight among several people."

The definition for revoke is "To cancel by taking back." Used in a sentence: After Kal's father revoked his allowance, he had no money for the movies. The definition for composed is "calm.", the definition for untenable is "Not able to be defended.", and the definition for placebo is "An inactive substance used in medical testing."

The definition for avian is "Relating to birds." Used in a sentence: The old man affectionately referred to pigeons as his "avian friends." The definition for appraise is "to evaluate the worth of.", the definition for insolence is "Boldness or rudeness.", and the definition for conduit is "Means for transmitting or distributing."