Definition: The word "lathiest," like a jolted, lathely bolt from a dark room into the night, can be defined as a person who is too serious about something to think lightly or casually. For instance:

"I just bought this new book and I'm not feeling very lathiest around it," said the librarian, looking at her latest acquisitions. Or, using 'lathiest' in an unsettling way: The young man had been working on his thesis all day but was still convinced that he was lathiest when he got home. These examples illustrate how "lathiest" can be both humorous and unsettling.