NANU Crossword answer

'NANU' is a 4 letter Word starting with N and ending with U

Crossword clues for NANU

Clue	Answer

When doubled, a sitcom sign-off (4)	NANU
Half a Mork-to-Orson farewell (4)
When doubled, Mork's goodbye (4)
When repeated, Mork's sign-off (4)