The definition for diffident is "Lacking self–confidence." Used in a sentence: The diffident student never raised her hand in class, even when she knew the answer. The definition for commemorate is "to mark by a ceremony.", the definition for prune is "To reduce by removing excess.", and the definition for composed is "Calm."

The definition for corrosive is "Bitingly sarcastic." Used in a sentence: The cruel Estella's corrosive comments made Pip cry. The definition for gruff is "rough or stern in manner or speech.", the definition for nurture is "To further the development of.", and the definition for repel is "To resist, reject."

The definition for periodic is "Occurring at regular intervals." Used in a sentence: The periodic innterruptions of the cuckoo clock prevented Li from concentrating. The definition for unscrupulous is "lacking principles.", the definition for regurgitate is "To pour out or throw back.", and the definition for incumbent is "Necessary as a duty or responsibility."

The definition for aerate is "To supply with air." Used in a sentence: Every spring, Soloman used his tiller to aerate the compact soil. The definition for servile is "fearfully submissive.", the definition for insolence is "Boldness or rudeness.", and the definition for conduit is "Means for transmitting or distributing."

The definition for trove is "Valuable collection." Used in a sentence: Walter's trove of vintage baseball cards was worth thousands of dollars. The definition for camaraderie is "spirit of friendship.", the definition for drub is "To defeat decisively.", and the definition for supple is "Flexible."