The definition for serenity is "Calmness." Used in a sentence: The serenity of the glassy sea soothed the sailors after the big storm. The definition for compulsion is "an irresistible impulse.", the definition for authoritarian is "Favoring absolute obedience to authority.", and the definition for eulogy is "Speech or writing in praise of deceased."

The definition for sociable is "Inclined to seek companionship." Used in a sentence: The sociable Glenda was delighted to receive the party invitation. The definition for corrective is "intended to correct.", the definition for demeanor is "Behavior towards others.", and the definition for interminable is "Never ending, or seemingly endless."

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 revoke is "to cancel by taking back.", the definition for ethical is "Conforming to accepted standards.", and the definition for implement is "To carry out or accomplish."

The definition for onset is "Beginning." Used in a sentence: Crocuses bloom at the onset of spring, sometimes even before the snow melts. The definition for rail is "to scold in harsh language.", the definition for stealth is "The act of moving secretly or unnoticed.", and the definition for beneficial is "Helpful."

The definition for opportune is "Suitable or convenient." Used in a sentence: Quan stepped onto the platform at the most opportune time, just as the train pulled in. The definition for epitaph is "brief statement honoring a dead person.", the definition for abate is "Become less in amount or intensity.", and the definition for adversary is "One who opposes or resists."