IPA: /ˈstrɛs.ləs.nəs/
KK: /ˈstrɛsˌlɛs.nəs/
The state of not feeling stress or anxiety.
After a long vacation, I finally experienced a sense of stresslessness.
Stresslessness → It is formed from "stress" (from Latin *stringere*, meaning to draw tight) and "-lessness" (meaning without). The word "stresslessness" refers to a state of being without stress or tension.
Think of being 'without' ('-lessness') the feeling of being 'drawn tight' ('stress'). This helps you remember that stresslessness means a state free from stress.