motherly; maternal
Describes a nurturing, caring, or protective quality associated with a mother, often used for people, behavior, or feelings.
彼女の母性的な優しさに感動した。
I was moved by her motherly kindness.
母性的な愛情で子供たちを見守る。
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.