Crossword Puzzle Groucho expression

Clue: Groucho expression

Groucho's expression (LEER with 4 letters)
Expression of resignation (e.g. ALAS with 4 letters)
Expression of disbelief (e.g. HUH with 3 letters)
Groucho, in "A Night at the Opera" (OTIS with 4 letters)
Coy expression (SIMPER with 6 letters)
Expressionist painter Nolde (EMIL with 4 letters)
Expressions of regret from apartment building managers? (SUPERSIGHS with 10 letters)
Pleased expression (e.g. GRIN with 4 letters)
Diet-drink expression (NOCAL with 5 letters)
Groucho continues (NECKINGWASAPOOR with 15 letters)