なおさら尚更naosaraなおnaoさらsara
1.

An adverb that emphasizes an increase in degree or intensity, often suggesting that an already existing situation becomes more pronounced under certain conditions.

2.

A phrase used to convey that something becomes increasingly true or relevant when additional factors are considered.

3.

A form of expression indicating that a preceding statement or action can be heightened or intensified due to the introduction of new circumstances.

Example:

それらの星は肉眼で見える、まして望遠鏡ならなおさらである。