Crossword Puzzle Go under fast

Clue: Go under fast

Some goers at underage shows (TEENS with 5 letters)
Broadway flop about an undercover goose? (THESECRETGANDER with 15 letters)
Underdog's fastener? (KNOTBYALONGSHOT with 15 letters)
Wins but good, like the underdog (MAKESASTATEMENT with 15 letters)
Underdog's goal (UPSET with 5 letters)
Underdog's goals (UPSETS with 6 letters)
Undergarment that makes scaly legs look good? (NEWTPANTYHOSE with 13 letters)
"I'm gonna say it like a man and make you understand, ___!" (AMANDA with 6 letters)
Underworld goddess (e.g. HECATE with 6 letters)
Greek underworld goddess (HECATE with 6 letters)