George A. Miller
Miller began working on Wordnet in the mid 1980s. It is a large database of English nouns, verbs, adjectives, and adverbs that are grouped into sets of cognitive synonyms which represent a specific concept or idea. It resembles a thesaurus since it groups words together based on their meanings. Miller wanted to use Wordnet as a tool to test psycholinguistic theories on how people use and understand words.