colloquial, old-fashioned Very close to; almost; nearly. Hey, don't feel bad that you're still single—shoot, I was mighty nigh 40 by the time I met my wife! I heard it's going to be mighty nigh 100 degrees on Saturday. She was mighty nigh frozen to death by the time we fished her out of that lake.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.