反芻はんすう
hansū

Noun
Suru Verb

1. rumination; regurgitation; chewing the cud

Transitive
Noun
Suru Verb

2. turning over in one's mind; thinking over (something); pondering; musing; rumination (about a subject)

Transitive
あらためて反芻はんすうしてると、何なんだかずかしいぞ。
aratamete hansū shiteruto nandaka hazukashiizo.
Now that I think over it, it's somewhat embarrassing.
Other forms: