not carved stone (adjective) subject to change: uncertain
Sinonime: airiness, debility, diaphaneity,
elegance, etherealness, exquisiteness, fragility, frailness, frailty, gossameriness, infirmity, lightness, slenderness, smoothness, softness, subtlety, tenderness, tenuity, translucency, transparency,
weaknessAntonime: coarseness, heaviness, indelicacy, inelegance, robustness, roughness