• (n.) The quality of being laudable; praiseworthiness; commendableness.
Laud'a·ble·ness (lad'ȧ*b'l*nĕs) noun The quality of being laudable; praiseworthiness; commendableness. 
laudableness 1. The quality of deserving praise; praiseworthiness; such as, the laudableness of designs, purposes, motives, or actions. 2. Being worthy of praise