うずく
疼く
uzuku

Godan Verb (ku)

1. to throb (with pain); to ache; to smart; to twinge

Intransitive
Usually Written in Kana
かれ冷酷れいこく言葉ことばいまでもわたくしこころなかでうずいている。
kareno rēkokuna kotobaga imademo watashino kokorono nakade uzuite iru
His bitter words still rankle in my mind.
Godan Verb (ku)

2. to rankle; to gall; to rile

Intransitive
Usually Written in Kana