查找三个使用单词“sesquipedalianism”的句子，并为每个句子提供定义。 
sesquipedalianism
1. "John's writing is full of sesquipedalianism, making it difficult for many readers to understand." Definition: the use of long and complex words, sentences or phrases in speech or writing.

2. "The professor's lectures were often criticized for their excessive sesquipedalianism, with many students struggling to keep up." Definition: the tendency to use long and convoluted words or phrases, often unnecessarily.

3. "The author's sesquipedalianism was praised by some critics for its sophistication, while others found it pretentious and inaccessible." Definition: the use of long, complex words or sentences for the purpose of showing off one's knowledge or intelligence.