一色

いっしょく, ひといろ, いっしきisshoku

noun · na-adjective

1. one color
2. one kind
3. one tendency
4. being the sole mood, sentiment, focus of attention, etc.
5. using only one type of plant (in ikebana)
6. earnest
7. single-minded
8. wholehearted

Study it in Yanamino