The best replacement for flat stomach is abs.

The best alternatives to flat stomach are rated as following:
★★★★★  abs
  6 pack
  six pack

Your alternative for flat stomach is not listed? Suggest!
Speaking about flat stomach, one probably shouldn't forget about exercise diet.

Other search terms related to flat stomach and their ratings are:
★★★★★ exercise diet
You have in mind a companion for flat stomach and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of flat stomach in all years. Click on graph for more.
flat stomach
abs
6 pack