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

Encyclopedia: Willy-nilly

• saddle block anesthesia
• saddle feather
• saddle hackle
• saddle horn
• saddle horse
• saddle of lamb
• saddle oxford
• saddle oyster
• saddle point
• saddle roof
• saddle seat
• saddle shoe
• saddle soap
• saddle stitch
• saddle-shaped
• saddle-sore
• saddleback
• saddleback roof
• saddlebag
• saddlebill
• saddlebow
• saddlecloth
• excitement
• exciter
• exciting