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good egg, a

good egg, a idiom

Also, a good scout. An amiable, basically nice person. For example, You can always count on her to help; she's a good egg, or His friends all think Dad's really a good scout. This colloquial antonym of bad egg dates from the early 1900s, as did the variant.

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.