Nada/ˈnɑːdə/ Definition 1 of 2Pro Tip 1/3Colloquial Usage Used in casual, informal conversation rather than formal speech or writing. When he asked how much money I had, I said 'nada'. Pro Tip 2/3Slang Synonym It’s slang and often used as a playful or cool alternative to 'nothing'. There's nada to do in this town. Pro Tip 3/3Emphasizing Negation It emphasizes the absence of anything, sometimes more than just saying 'nothing'. He found nada, not a single clue.