What is the comparative and superlative of understanding?

While "understanding" itself doesn't have direct comparative and superlative forms, we can use other words or phrases to express varying degrees of understanding:

Comparative:

* More understanding

* Greater understanding

* More insightful

* More perceptive

* More knowledgeable

Superlative:

* Most understanding

* Greatest understanding

* Most insightful

* Most perceptive

* Most knowledgeable

Example:

* "She is more understanding than her sister."

* "He has the greatest understanding of the subject."

Keep in mind, the specific word choice will depend on the context and the specific nuance you want to convey.