さわsawaru
1.

To have a detrimental effect on someone or something, often resulting in discomfort or adverse outcomes.

2.

To interfere with or obstruct an activity or process, negatively impacting its flow or progress.

3.

To provoke a strong emotional or sensory reaction that is perceived as unpleasant or disturbing.

Example:

トムの話し方は私の癇にさわる。

sashiさわsawaru
1.

To create an obstacle or disturbance that prevents normal progress or functioning.

2.

To interfere with or disrupt a process, leading to potential complications or delays.

3.

To negatively influence or impair someone's ability to perform a task or activity.