well-grounded

[ wel-groun-did ]
/ ˈwɛlˈgraʊn dɪd /

adjective

based on good reasons; well-founded: His opposition to the scheme is well-grounded.
well or thoroughly instructed in the basic principles of a subject: She is well-grounded in mathematics.

Origin of well-grounded

Middle English word dating back to 1325–75
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for well-grounded

British Dictionary definitions for well-grounded

well-grounded

adjective (well grounded when postpositive)

well instructed in the basic elements of a subject
another term for well-founded
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012