big of someone

big of (one)

Noble or commendable. This phrase is often said sarcastically. Wow, you're actually going to spend time with your brother tonight? That's big of you. It's big of you to reconcile with people who have wronged you in the past.
See also: big, of
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

big of someone

1. mod. magnanimous of someone. It was big of Tom to come back and apologize.
2. mod. nice of someone. (Often sarcastic.) A whole pound. Wow, that is really big of you!
See also: big, of, someone
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
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References in periodicals archive ?
"It is big of someone when they do get sent off to come out and apologise.
He said: "It's big of someone when they do get sent off to come out and apologise.
He said: "It's big of someone when they do get sent o to come out and apologise.