supportiveness

UK: /səˈpɔːtɪvnɪs/

WordReference Random House Unabridged Dictionary of American English © 2025

sup•port•ive  (sə pôr′tiv, -pōr′-), adj. 

1. giving support.
2. providing sympathy or encouragement:
   His family was supportive of his attempts to be a writer.
3. providing additional help, information, etc.;
   auxiliary:
   manufacturers of supportive materials.
4. Medicine helping to maintain a normal physiological balance, as by the intravenous administration of required nutriment.

• support + -ive 1585–95

sup•port′ive•ness, n.