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 precept is "a general rule of action.", the definition for augment is "To make greater.", and the definition for implement is "To carry out or accomplish."

The definition for eloquent is "Fluent, expressive." Used in a sentence: Kim, an eloquent speaker, was the best choice to make the presentation for the group. The definition for defiant is "showing bold resistance.", the definition for perception is "Capacity for seeing or understanding.", and the definition for placebo is "An inactive substance used in medical testing."

The definition for celebrated is "Widely known, respected." Used in a sentence: The fans waited for hours to catch a glimpse of the celebrated actress. The definition for implausible is "unbelievable.", the definition for plaudits is "Enthusiastic approval.", and the definition for corrective is "Intended to correct."

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 brandish is "to shake or wave menacingly.", the definition for servile is "Fearfully submissive.", and the definition for diffident is "Lacking self–confidence."

The definition for placebo is "An inactive substance used in medical testing." Used in a sentence: Tom, who had taken the placebo, found that his allergy symptoms did not go away. The definition for diffident is "lacking self–confidence.", the definition for retroactive is "effective as of a prior time or condition.", and the definition for raucous is "Noisy, rowdy."