Crossword Genius

Impulse (4)

Ross

There are a few possibilities for this:

(Another definition for onan that I've seen is " Judah's second son".)

I've seen this clue in the Sydney Morning Herald, The Mirror, the USA Today, the LA Times, The Star Tribune, the Penny Press, The Sunday Times, the Newsday.com, The Telegraph, the Evening Standard, The Wall Street Journal and The Guardian.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.