The definition for negate is "To make invalid." Used in a sentence: Paula negated Tiffany's argument by proving that her main premise was false. The definition for beneficial is "helpful.", the definition for buffer is "Protective barrier.", and the definition for placebo is "An inactive substance used in medical testing."

The definition for derivative is "Lacking originality." Used in a sentence: Critics panned the movie as a derivative version of last year's Best Picture. The definition for deferment is "the act of delaying.", the definition for implement is "To carry out or accomplish.", and the definition for disconcert is "To throw into confusion."

The definition for censure is "To find fault with." Used in a sentence: The critical teacher was quick to censure her students for even small mistakes. The definition for mediate is "to come between parties in order to reconcile.", the definition for diffident is "Lacking self–confidence.", and the definition for implausible is "Unbelievable."

The definition for prune is "To reduce by removing excess." Used in a sentence: The candidate pruned his speech so he would not exceed the time limit. The definition for promote is "to contribute to the growth or prosperity of.", the definition for pomp is "Showy display.", and the definition for finite is "Having definite limits."

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 oblivious is "lacking awareness.", the definition for polarize is "To break up into opposing groups.", and the definition for gruff is "Rough or stern in manner or speech."