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 implausible is "unbelievable.", the definition for commemorate is "To mark by a ceremony.", and the definition for punctual is "On time."

The definition for pretense is "False intention or purpose." Used in a sentence: The jewel thief entered the mansion under the pretense of fixing a leaky faucet. The definition for buffer is "protective barrier.", the definition for augment is "To make greater.", and the definition for stifle is "To repress or discourage."

The definition for conduit is "Means for transmitting or distributing." Used in a sentence: Jason, a notorious gossip, was a conduit for information about his friends. The definition for onset is "beginning.", the definition for extenuating is "Partially excusing.", and the definition for foil is "One that enhances or underscores by contrast."

The definition for salvage is "To save from ruin." Used in a sentence: After the fire, Mrs. Han tried to salvage her family photos from the wreckage. The definition for brandish is "to shake or wave menacingly.", the definition for accentuate is "To emphasize.", and the definition for penurious is "Extrememly stingy."

The definition for manifest is "Obvious." Used in a sentence: James finally made his affection manifest when he handed Jessica a red rose. The definition for civility is "politeness.", the definition for avian is "Relating to birds.", and the definition for precept is "A general rule of action."