Someone who frequently uses big words, often to impress others or appear more intelligent, can be called a sesquipedalian. This term refers to someone who enjoys using long, multisyllabic words.
Here are some other words that might be used to describe someone who uses big words excessively:
- Pedant: A person who is excessively concerned with minor details and rules, often in a way that is annoying to others.
- Pretentious: Characterized by an attitude of superiority and an exaggerated display of importance.
- Grandiloquent: Using high-flown or bombastic language.
While these terms can be used to describe someone who uses big words, it's important to note that using a large vocabulary is not inherently bad. It's only when someone uses big words in a way that is ostentatious or inappropriate that it becomes a negative characteristic.