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 incisive is "impressively direct and decisive.", the definition for intricate is "Having complex and interrelated parts.", and the definition for aerate is "To supply with air."

The definition for clairvoyance is "Ability to see things beyond ordinary perception." Used in a sentence: Rosa used her clairvoyance to help Alexander find his lost keys. The definition for archaic is "characteristic of an earlier time.", the definition for commemorate is "To mark by a ceremony.", and the definition for mandate is "An official order or commission to do something."

The definition for heinous is "Shockingly evil." Used in a sentence: Eduardo's heinous betrayal of Lydia shocked even Latasha, who knew his evil ways. The definition for apathetic is "showing little or no emotion.", the definition for onset is "Beginning.", and the definition for deferment is "The act of delaying."

The definition for defiant is "Showing bold resistance." Used in a sentence: The defiant toddler refused to leave the park. The definition for heinous is "shockingly evil.", the definition for extol is "To praise highly.", and the definition for colossal is "Immense, enormous."

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 disconcert is "to throw into confusion.", the definition for clairvoyance is "Ability to see things beyond ordinary perception.", and the definition for advantageous is "Giving an advantage."