What is the crossword answer for the clue: Itll never work

NOUSE - a 5 letter word may be the answer you are looking for!

HAREBRAINEDIDEA - a 15 letter word may be the answer you are looking for!

SCRATCHTHATIDEA - a 15 letter word may be the answer you are looking for!

DUD - a 3 letter word may be the answer you are looking for!

It'll never work

3 Character Answers:

DUD

5 Character Answers:

NOUSE

15 Character Answers:

HAREBRAINEDIDEA

SCRATCHTHATIDEA