Noun has 2 senses

• pliantness(n = noun.attribute) pliancy, suppleness - the property of being pliant and flexible;

Derived form adjective pliant₂, adjective pliant₄

• pliantness(n = noun.attribute) pliability, pliancy, suppleness - adaptability of mind or character; "he increased the leanness and suppleness of the organization"; "he was valued for his reliability and pliability"

Derived form adjective pliant₁, adjective pliant₃