細心、丁寧
Kana: さいしん、ていねい
careful, polite
What 細心、丁寧 means
細心、丁寧 (さいしん、ていねい) is a Japanese word meaning “careful, polite”. It belongs to the Describing Words topic and appears at Level 4, so it is one of the words worth learning early when you study Japanese.