にくい

にくい

Difficult; hard to.

Here, 'にくい' links to the verb '歩く' (to walk), specifying that the act of walking is made difficult by the shoes.

この靴は歩きにくいです。

These shoes are difficult to walk in.

Here, 'にくい' is attached to the verb '理解する' (to understand) and implies that the action of understanding is difficult to perform.

この本は理解しにくいです。

This book is hard to understand.

In this sentence, 'にくい' attaches to the verb '話す' (to speak), indicating that speaking is challenging due to the atmosphere.

話しにくい雰囲気を感じました。

I felt an atmosphere that made it hard to speak.