1.Definition: distinguished from others in excellence

"Did outstanding work in human relations", "An outstanding war record"

2.Definition: having a quality that thrusts itself into attention

"An outstanding fact of our time is that nations poisoned by anti semitism proved less fortunate in regard to their own freedom"

Related Adjective(s):prominent, salient, spectacular, striking

3.Definition: of major significance or importance

"Einstein was one of the outstanding figures of the 20th centurey"

Related Adjective(s):great

4.Definition: owed as a debt

"Outstanding bills"

Related Adjective(s):owing, undischarged