Home Dee Dee Word of the Day – July 13 – Nebulous Dee Dee Word of the Day – July 13 – Nebulous By Staff mB - July 13, 2012 714 Adjective: Nebulous (NEB-yuh-luhs) Definition: Unclear, hazy, vague, ambiguous. Sample sentence: His answer to the question was nebulous, and it was obvious he didn’t want to answer it directly.