The word "crowdest" is spelled as /ˈkraʊdɪst/. It is the superlative form of the adjective "crowded" which means "filled with a large number of people or things". The addition of "-est" at the end of the word indicates that it is the most crowded or the ultimate in terms of crowding. While it is not a commonly used word, it can be helpful in describing a place or event that is extremely crowded and packed with people or things.