The definition for commemorate is "To mark by a ceremony." Used in a sentence: Each year, the Franklins commemorate their anniversary by visiting the site of their first date. The definition for foil is "one that enhances or underscores by contrast.", the definition for opportune is "Suitable or convenient.", and the definition for colossal is "Immense, enormous."

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 entangle is "to involve in trouble.", the definition for corrosive is "Bitingly sarcastic.", and the definition for accentuate is "To emphasize."

The definition for extant is "Currently existing." Used in a sentence: Some consider Clint Eastwood the greatest extant American director. The definition for buffer is "protective barrier.", the definition for euphoria is "Feeling of great happiness.", and the definition for interminable is "Never ending, or seemingly endless."

The definition for equitable is "Fair and equal." Used in a sentence: The judge made an equitable decision dividing the estate evenly among the sisters. The definition for fragile is "delicate.", the definition for ethical is "Conforming to accepted standards.", and the definition for camaraderie is "Spirit of friendship."

The definition for inviolable is "Secure from assault of trespass." Used in a sentence: Situated on a mountain, with sixteen–foot walls, the castle was inviolable. The definition for iridescent is "having a lustrous or attractivve quality.", the definition for catastrophic is "Relating to extreme misfortune.", and the definition for prominence is "Importance."