motherly; maternal
Describes a nurturing, caring, or protective quality associated with a mother, often used for people, behavior, or feelings.
I was moved by her motherly kindness.
She watches over the children with maternal affection.
Formed from 母性 (motherhood) + 的 (-like, -ish). The exact historical derivation is uncertain, but the word follows a common pattern for creating adjectival nouns.