mother wit

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Innate intelligence or common sense.

from The Century Dictionary.

• noun Native wit; common sense.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Inborn intelligence; innate good sense.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun sound practical judgment