nakunaku

Adverb

1. tearfully; in tears; weeping; crying

先週 せんしゅうあたりも さそってくれていたが、夜 よる おそいので、泣 ことわった。
senshū atarimo sasotte kurete itaga yoruga osoinode nakunaku kotowatta.
I was invited last week as well, but it was late so I regretfully turned them down.
Adverb

2. reluctantly; unwillingly; with a heavy heart