well-grounded

[ wel-groun-did ]

adjective

1. based on good reasons; well-founded:

   His opposition to the scheme is well-grounded.

2. well or thoroughly instructed in the basic principles of a subject:

   She is well-grounded in mathematics.

well-grounded

adjective

1. well instructed in the basic elements of a subject
2. another term for well-founded

Word History and Origins

Origin of well-grounded¹

Middle English word dating back to 1325–75