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 preclude is "to rule out in advance.", the definition for stern is "Harsh, severe.", and the definition for fidelity is "State of being faithful."

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 immoderate is "beyond usual or proper limits.", the definition for fraud is "Trick.", and the definition for clarity is "Clearness."

The definition for plaudits is "Enthusiastic approval." Used in a sentence: Allison's painting met with plaudits from the critics, who had dismissed her earlier work. The definition for recrimination is "a retaliatory accusation.", the definition for trove is "Valuable collection.", and the definition for euphoria is "Feeling of great happiness."

The definition for preclude is "To rule out in advance." Used in a sentence: "Having cake now will preclude dessert later," said Amber's mother. The definition for implausible is "unbelievable.", the definition for ploy is "A contrived plan.", and the definition for heed is "To pay attention to."

The definition for compulsion is "An irresistible impulse." Used in a sentence: Tamar, a shoe fanatic, could not resist the compulsion to buy the shiny red boots. The definition for punctual is "on time.", the definition for inflammatory is "Tending to excite anger.", and the definition for repel is "To resist, reject."