The definition for periodic is "Occurring at regular intervals." Used in a sentence: The periodic innterruptions of the cuckoo clock prevented Li from concentrating. The definition for grandiose is "with an affectation of grandeur.", the definition for corroborate is "To support with evidence.", and the definition for epistolary is "Contained or carried on in letters."

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 salvage is "to save from ruin.", the definition for combustion is "Act of burning.", and the definition for redouble is "To make twice as great."

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 incumbent is "necessary as a duty or responsibility.", the definition for scapegoat is "Someone who bears the blame for others.", and the definition for anthology is "A collection of selected literary pieces."

The definition for finite is "Having definite limits." Used in a sentence: The exasperated mother had finite patience for her toddler's tantrums. The definition for condone is "to treat as acceptable.", the definition for defiant is "Showing bold resistance.", and the definition for stealth is "The act of moving secretly or unnoticed."

The definition for iridescent is "Having a lustrous or attractivve quality." Used in a sentence: The movie star's iridescent presence charmed even the hardened reporter. The definition for foil is "one that enhances or underscores by contrast.", the definition for gruff is "Rough or stern in manner or speech.", and the definition for implausible is "Unbelievable."