1. In a random manner
   - randomly, indiscriminately, haphazardly, arbitrarily, at random, every which way 
2. Without having a choice
   - nolens volens

Encyclopedia: Willy-nilly

• Sholom Asch
• Shona
• shonky
• shoo
• shoo away
• shoo off
• shoo-in
• shoofly
• shoofly pie
• shook
• shoot
• shoot a line
• shoot craps
• shoot for
• shoot one's mouth off
• shoot the breeze
• shoot up
• shoot-'em-up
• shoot-down
• shooter
• shooting
• shooting box
• shooting brake
• shooting gallery
• shooting iron