noun, noun or participle which takes 'suru', transitive verb
Childish or affectionate reduplication of 撫でる; used for gentle, repeated patting or stroking, often in a cute or soothing manner.
子供が犬をなでなでしている。
The child is patting the dog.
赤ちゃんの頭をなでなでしてあげた。
I gently stroked the baby's head.