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 perception is "capacity for seeing or understanding.", the definition for heinous is "Shockingly evil.", and the definition for polarize is "To break up into opposing groups."

The definition for derelict is "Abandoned." Used in a sentence: The derelict house was condemned as a public hazard. The definition for discern is "to recognize as separate as distinct.", the definition for raucous is "Noisy, rowdy.", and the definition for lenient is "Mild or tolerant."

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 deferment is "the act of delaying.", the definition for revoke is "To cancel by taking back.", and the definition for gruff is "Rough or stern in manner or speech."

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 derelict is "abandoned.", the definition for compulsion is "An irresistible impulse.", and the definition for regurgitate is "To pour out or throw back."

The definition for prune is "To reduce by removing excess." Used in a sentence: The candidate pruned his speech so he would not exceed the time limit. The definition for extol is "to praise highly.", the definition for gruff is "Rough or stern in manner or speech.", and the definition for solace is "Source of consolation."